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Finding the Fourth Proportional to 379,712.70, 569,569.05 and 202,128.30

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Solution

The fourth proportional to 379,712.70, 569,569.05 and 202,128.30 is: 303,192.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,712.70 : 569,569.05 = 202,128.30 : x
  2. Step 2: Convert to fraction form
    379,712.70/569,569.05 = 202,128.30/x
  3. Step 3: Cross multiply
    379,712.70x = 569,569.05 × 202,128.30
  4. Step 4: Simplify right side
    379,712.70x = 115,126,023,809.12
  5. Step 5: Solve for x
    x = 115,126,023,809.12/379,712.70
  6. Step 6: Final answer
    x = 303,192.45

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Similar ratio
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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.