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Finding the Fourth Proportional to 358,042.70, 537,023.75 and 91,809.47

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Solution

The fourth proportional to 358,042.70, 537,023.75 and 91,809.47 is: 137,703.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,042.70 : 537,023.75 = 91,809.47 : x
  2. Step 2: Convert to fraction form
    358,042.70/537,023.75 = 91,809.47/x
  3. Step 3: Cross multiply
    358,042.70x = 537,023.75 × 91,809.47
  4. Step 4: Simplify right side
    358,042.70x = 49,303,862,720.75
  5. Step 5: Solve for x
    x = 49,303,862,720.75/358,042.70
  6. Step 6: Final answer
    x = 137,703.86

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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.