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Finding the Fourth Proportional to 356,750.26, 535,124.31 and 90,510.28

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Solution

The fourth proportional to 356,750.26, 535,124.31 and 90,510.28 is: 135,765.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,750.26 : 535,124.31 = 90,510.28 : x
  2. Step 2: Convert to fraction form
    356,750.26/535,124.31 = 90,510.28/x
  3. Step 3: Cross multiply
    356,750.26x = 535,124.31 × 90,510.28
  4. Step 4: Simplify right side
    356,750.26x = 48,434,251,132.91
  5. Step 5: Solve for x
    x = 48,434,251,132.91/356,750.26
  6. Step 6: Final answer
    x = 135,765.15

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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.