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Finding the Fourth Proportional to 202,487.40, 303,731.10 and 155,248.20

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Solution

The fourth proportional to 202,487.40, 303,731.10 and 155,248.20 is: 232,872.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,487.40 : 303,731.10 = 155,248.20 : x
  2. Step 2: Convert to fraction form
    202,487.40/303,731.10 = 155,248.20/x
  3. Step 3: Cross multiply
    202,487.40x = 303,731.10 × 155,248.20
  4. Step 4: Simplify right side
    202,487.40x = 47,153,706,559.02
  5. Step 5: Solve for x
    x = 47,153,706,559.02/202,487.40
  6. Step 6: Final answer
    x = 232,872.30

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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.