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Finding the Fourth Proportional to 351,624.56, 527,429.54 and 85,386.47

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Solution

The fourth proportional to 351,624.56, 527,429.54 and 85,386.47 is: 128,077.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,624.56 : 527,429.54 = 85,386.47 : x
  2. Step 2: Convert to fraction form
    351,624.56/527,429.54 = 85,386.47/x
  3. Step 3: Cross multiply
    351,624.56x = 527,429.54 × 85,386.47
  4. Step 4: Simplify right side
    351,624.56x = 45,035,344,170.64
  5. Step 5: Solve for x
    x = 45,035,344,170.64/351,624.56
  6. Step 6: Final answer
    x = 128,077.93

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1.5x scale

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.