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Finding the Fourth Proportional to 561,906,403.70, 842,859,605.55 and 238,748,285.30

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Solution

The fourth proportional to 561,906,403.70, 842,859,605.55 and 238,748,285.30 is: 358,122,427.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,906,403.70 : 842,859,605.55 = 238,748,285.30 : x
  2. Step 2: Convert to fraction form
    561,906,403.70/842,859,605.55 = 238,748,285.30/x
  3. Step 3: Cross multiply
    561,906,403.70x = 842,859,605.55 × 238,748,285.30
  4. Step 4: Simplify right side
    561,906,403.70x = 201,231,285,573,696,864
  5. Step 5: Solve for x
    x = 201,231,285,573,696,864/561,906,403.70
  6. Step 6: Final answer
    x = 358,122,427.95

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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.