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Finding the Fourth Proportional to 497,314.80, 745,972.20 and 217,378.80

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Solution

The fourth proportional to 497,314.80, 745,972.20 and 217,378.80 is: 326,068.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,314.80 : 745,972.20 = 217,378.80 : x
  2. Step 2: Convert to fraction form
    497,314.80/745,972.20 = 217,378.80/x
  3. Step 3: Cross multiply
    497,314.80x = 745,972.20 × 217,378.80
  4. Step 4: Simplify right side
    497,314.80x = 162,158,541,669.36
  5. Step 5: Solve for x
    x = 162,158,541,669.36/497,314.80
  6. Step 6: Final answer
    x = 326,068.20

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Similar ratio
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1.5x scale

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.