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Finding the Fourth Proportional to 391,024.40, 586,555.80 and 204,400.40

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Solution

The fourth proportional to 391,024.40, 586,555.80 and 204,400.40 is: 306,610.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,024.40 : 586,555.80 = 204,400.40 : x
  2. Step 2: Convert to fraction form
    391,024.40/586,555.80 = 204,400.40/x
  3. Step 3: Cross multiply
    391,024.40x = 586,555.80 × 204,400.40
  4. Step 4: Simplify right side
    391,024.40x = 119,892,240,142.32
  5. Step 5: Solve for x
    x = 119,892,240,142.32/391,024.40
  6. Step 6: Final answer
    x = 306,610.64

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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.