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Finding the Fourth Proportional to 287,732.70, 402,300.90 and 287,732.70

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Solution

The fourth proportional to 287,732.70, 402,300.90 and 287,732.70 is: 402,300.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,732.70 : 402,300.90 = 287,732.70 : x
  2. Step 2: Convert to fraction form
    287,732.70/402,300.90 = 287,732.70/x
  3. Step 3: Cross multiply
    287,732.70x = 402,300.90 × 287,732.70
  4. Step 4: Simplify right side
    287,732.70x = 115,755,124,169.43
  5. Step 5: Solve for x
    x = 115,755,124,169.43/287,732.70
  6. Step 6: Final answer
    x = 402,300.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.