Home / 420,221.61-579,905.04-229,234.95

Finding the Fourth Proportional to 420,221.61, 579,905.04 and 229,234.95

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Solution

The fourth proportional to 420,221.61, 579,905.04 and 229,234.95 is: 316,343.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,221.61 : 579,905.04 = 229,234.95 : x
  2. Step 2: Convert to fraction form
    420,221.61/579,905.04 = 229,234.95/x
  3. Step 3: Cross multiply
    420,221.61x = 579,905.04 × 229,234.95
  4. Step 4: Simplify right side
    420,221.61x = 132,934,502,849.15
  5. Step 5: Solve for x
    x = 132,934,502,849.15/420,221.61
  6. Step 6: Final answer
    x = 316,343.80

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1.5x scale

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.