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Finding the Fourth Proportional to 590,390.78, 885,520.56 and 211,296.20

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Solution

The fourth proportional to 590,390.78, 885,520.56 and 211,296.20 is: 316,920.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,390.78 : 885,520.56 = 211,296.20 : x
  2. Step 2: Convert to fraction form
    590,390.78/885,520.56 = 211,296.20/x
  3. Step 3: Cross multiply
    590,390.78x = 885,520.56 × 211,296.20
  4. Step 4: Simplify right side
    590,390.78x = 187,107,129,349.87
  5. Step 5: Solve for x
    x = 187,107,129,349.87/590,390.78
  6. Step 6: Final answer
    x = 316,920.82

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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.