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Finding the Fourth Proportional to 282,430.80, 423,645.99 and 72,068.76

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Solution

The fourth proportional to 282,430.80, 423,645.99 and 72,068.76 is: 108,103.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,430.80 : 423,645.99 = 72,068.76 : x
  2. Step 2: Convert to fraction form
    282,430.80/423,645.99 = 72,068.76/x
  3. Step 3: Cross multiply
    282,430.80x = 423,645.99 × 72,068.76
  4. Step 4: Simplify right side
    282,430.80x = 30,531,641,178.27
  5. Step 5: Solve for x
    x = 30,531,641,178.27/282,430.80
  6. Step 6: Final answer
    x = 108,103.09

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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.