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Finding the Fourth Proportional to 297,124.39, 445,642.74 and 86,705.83

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Solution

The fourth proportional to 297,124.39, 445,642.74 and 86,705.83 is: 130,045.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,124.39 : 445,642.74 = 86,705.83 : x
  2. Step 2: Convert to fraction form
    297,124.39/445,642.74 = 86,705.83/x
  3. Step 3: Cross multiply
    297,124.39x = 445,642.74 × 86,705.83
  4. Step 4: Simplify right side
    297,124.39x = 38,639,823,655.17
  5. Step 5: Solve for x
    x = 38,639,823,655.17/297,124.39
  6. Step 6: Final answer
    x = 130,045.95

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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.