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Finding the Fourth Proportional to 492,017.69, 738,068.79 and 137,031.68

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Solution

The fourth proportional to 492,017.69, 738,068.79 and 137,031.68 is: 205,559.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,017.69 : 738,068.79 = 137,031.68 : x
  2. Step 2: Convert to fraction form
    492,017.69/738,068.79 = 137,031.68/x
  3. Step 3: Cross multiply
    492,017.69x = 738,068.79 × 137,031.68
  4. Step 4: Simplify right side
    492,017.69x = 101,138,808,608.31
  5. Step 5: Solve for x
    x = 101,138,808,608.31/492,017.69
  6. Step 6: Final answer
    x = 205,559.29

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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.