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Finding the Fourth Proportional to 355,011.18, 532,773.66 and 138,901.88

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Solution

The fourth proportional to 355,011.18, 532,773.66 and 138,901.88 is: 208,453.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,011.18 : 532,773.66 = 138,901.88 : x
  2. Step 2: Convert to fraction form
    355,011.18/532,773.66 = 138,901.88/x
  3. Step 3: Cross multiply
    355,011.18x = 532,773.66 × 138,901.88
  4. Step 4: Simplify right side
    355,011.18x = 74,003,262,988.48
  5. Step 5: Solve for x
    x = 74,003,262,988.48/355,011.18
  6. Step 6: Final answer
    x = 208,453.33

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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.