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Finding the Fourth Proportional to 487,262.22, 730,792.89 and 187,639.98

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Solution

The fourth proportional to 487,262.22, 730,792.89 and 187,639.98 is: 281,421.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,262.22 : 730,792.89 = 187,639.98 : x
  2. Step 2: Convert to fraction form
    487,262.22/730,792.89 = 187,639.98/x
  3. Step 3: Cross multiply
    487,262.22x = 730,792.89 × 187,639.98
  4. Step 4: Simplify right side
    487,262.22x = 137,125,963,263.74
  5. Step 5: Solve for x
    x = 137,125,963,263.74/487,262.22
  6. Step 6: Final answer
    x = 281,421.29

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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.