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Finding the Fourth Proportional to 356,627.47, 534,935.80 and 86,758.15

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Solution

The fourth proportional to 356,627.47, 534,935.80 and 86,758.15 is: 130,135.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,627.47 : 534,935.80 = 86,758.15 : x
  2. Step 2: Convert to fraction form
    356,627.47/534,935.80 = 86,758.15/x
  3. Step 3: Cross multiply
    356,627.47x = 534,935.80 × 86,758.15
  4. Step 4: Simplify right side
    356,627.47x = 46,410,040,376.77
  5. Step 5: Solve for x
    x = 46,410,040,376.77/356,627.47
  6. Step 6: Final answer
    x = 130,135.91

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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.