Home / 420,702.48-580,570.14-229,711.80

Finding the Fourth Proportional to 420,702.48, 580,570.14 and 229,711.80

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Solution

The fourth proportional to 420,702.48, 580,570.14 and 229,711.80 is: 317,002.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,702.48 : 580,570.14 = 229,711.80 : x
  2. Step 2: Convert to fraction form
    420,702.48/580,570.14 = 229,711.80/x
  3. Step 3: Cross multiply
    420,702.48x = 580,570.14 × 229,711.80
  4. Step 4: Simplify right side
    420,702.48x = 133,363,811,885.65
  5. Step 5: Solve for x
    x = 133,363,811,885.65/420,702.48
  6. Step 6: Final answer
    x = 317,002.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.