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Finding the Fourth Proportional to 260,113, 390,170.46 and 63,121

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Solution

The fourth proportional to 260,113, 390,170.46 and 63,121 is: 94,681.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,113 : 390,170.46 = 63,121 : x
  2. Step 2: Convert to fraction form
    260,113/390,170.46 = 63,121/x
  3. Step 3: Cross multiply
    260,113x = 390,170.46 × 63,121
  4. Step 4: Simplify right side
    260,113x = 24,627,949,605.66
  5. Step 5: Solve for x
    x = 24,627,949,605.66/260,113
  6. Step 6: Final answer
    x = 94,681.73

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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.