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Finding the Fourth Proportional to 379,686.60, 569,248.02 and 229,891.28

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Solution

The fourth proportional to 379,686.60, 569,248.02 and 229,891.28 is: 344,666.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,686.60 : 569,248.02 = 229,891.28 : x
  2. Step 2: Convert to fraction form
    379,686.60/569,248.02 = 229,891.28/x
  3. Step 3: Cross multiply
    379,686.60x = 569,248.02 × 229,891.28
  4. Step 4: Simplify right side
    379,686.60x = 130,865,153,109.03
  5. Step 5: Solve for x
    x = 130,865,153,109.03/379,686.60
  6. Step 6: Final answer
    x = 344,666.24

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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.