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Finding the Fourth Proportional to 274,369,721.69, 411,488,685.81 and 126,675,376.62

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Solution

The fourth proportional to 274,369,721.69, 411,488,685.81 and 126,675,376.62 is: 189,982,640.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,369,721.69 : 411,488,685.81 = 126,675,376.62 : x
  2. Step 2: Convert to fraction form
    274,369,721.69/411,488,685.81 = 126,675,376.62/x
  3. Step 3: Cross multiply
    274,369,721.69x = 411,488,685.81 × 126,675,376.62
  4. Step 4: Simplify right side
    274,369,721.69x = 52,125,484,249,850,600
  5. Step 5: Solve for x
    x = 52,125,484,249,850,600/274,369,721.69
  6. Step 6: Final answer
    x = 189,982,640.69

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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.