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Finding the Fourth Proportional to 428,162.52, 590,304.15 and 368,375.40

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Solution

The fourth proportional to 428,162.52, 590,304.15 and 368,375.40 is: 507,876.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,162.52 : 590,304.15 = 368,375.40 : x
  2. Step 2: Convert to fraction form
    428,162.52/590,304.15 = 368,375.40/x
  3. Step 3: Cross multiply
    428,162.52x = 590,304.15 × 368,375.40
  4. Step 4: Simplify right side
    428,162.52x = 217,453,527,377.91
  5. Step 5: Solve for x
    x = 217,453,527,377.91/428,162.52
  6. Step 6: Final answer
    x = 507,876.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.