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Finding the Fourth Proportional to 260,008,272,030.15, 390,012,408,045.22 and 260,008,272,030.15

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Solution

The fourth proportional to 260,008,272,030.15, 390,012,408,045.22 and 260,008,272,030.15 is: 390,012,408,045.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,008,272,030.15 : 390,012,408,045.22 = 260,008,272,030.15 : x
  2. Step 2: Convert to fraction form
    260,008,272,030.15/390,012,408,045.22 = 260,008,272,030.15/x
  3. Step 3: Cross multiply
    260,008,272,030.15x = 390,012,408,045.22 × 260,008,272,030.15
  4. Step 4: Simplify right side
    260,008,272,030.15x = 101,406,452,286,155,414,044,672
  5. Step 5: Solve for x
    x = 101,406,452,286,155,414,044,672/260,008,272,030.15
  6. Step 6: Final answer
    x = 390,012,408,045.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.