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Finding the Fourth Proportional to 260,102.27, 390,153.40 and 73,113.77

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Solution

The fourth proportional to 260,102.27, 390,153.40 and 73,113.77 is: 109,670.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,102.27 : 390,153.40 = 73,113.77 : x
  2. Step 2: Convert to fraction form
    260,102.27/390,153.40 = 73,113.77/x
  3. Step 3: Cross multiply
    260,102.27x = 390,153.40 × 73,113.77
  4. Step 4: Simplify right side
    260,102.27x = 28,525,585,952.32
  5. Step 5: Solve for x
    x = 28,525,585,952.32/260,102.27
  6. Step 6: Final answer
    x = 109,670.65

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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.