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Finding the Fourth Proportional to 285,145.29, 393,494.63 and 157,813.29

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Solution

The fourth proportional to 285,145.29, 393,494.63 and 157,813.29 is: 217,779.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,145.29 : 393,494.63 = 157,813.29 : x
  2. Step 2: Convert to fraction form
    285,145.29/393,494.63 = 157,813.29/x
  3. Step 3: Cross multiply
    285,145.29x = 393,494.63 × 157,813.29
  4. Step 4: Simplify right side
    285,145.29x = 62,098,681,368.57
  5. Step 5: Solve for x
    x = 62,098,681,368.57/285,145.29
  6. Step 6: Final answer
    x = 217,779.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.