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Finding the Fourth Proportional to 345,952.72, 518,991.81 and 156,502.36

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Solution

The fourth proportional to 345,952.72, 518,991.81 and 156,502.36 is: 234,781.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,952.72 : 518,991.81 = 156,502.36 : x
  2. Step 2: Convert to fraction form
    345,952.72/518,991.81 = 156,502.36/x
  3. Step 3: Cross multiply
    345,952.72x = 518,991.81 × 156,502.36
  4. Step 4: Simplify right side
    345,952.72x = 81,223,443,085.67
  5. Step 5: Solve for x
    x = 81,223,443,085.67/345,952.72
  6. Step 6: Final answer
    x = 234,781.92

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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.