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Finding the Fourth Proportional to 287,736.70, 402,306.50 and 287,736.70

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Solution

The fourth proportional to 287,736.70, 402,306.50 and 287,736.70 is: 402,306.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,736.70 : 402,306.50 = 287,736.70 : x
  2. Step 2: Convert to fraction form
    287,736.70/402,306.50 = 287,736.70/x
  3. Step 3: Cross multiply
    287,736.70x = 402,306.50 × 287,736.70
  4. Step 4: Simplify right side
    287,736.70x = 115,758,344,698.55
  5. Step 5: Solve for x
    x = 115,758,344,698.55/287,736.70
  6. Step 6: Final answer
    x = 402,306.50

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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.