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Finding the Fourth Proportional to 442,232.91, 660,131.80 and 386,245.71

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Solution

The fourth proportional to 442,232.91, 660,131.80 and 386,245.71 is: 576,558.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,232.91 : 660,131.80 = 386,245.71 : x
  2. Step 2: Convert to fraction form
    442,232.91/660,131.80 = 386,245.71/x
  3. Step 3: Cross multiply
    442,232.91x = 660,131.80 × 386,245.71
  4. Step 4: Simplify right side
    442,232.91x = 254,973,074,818.96
  5. Step 5: Solve for x
    x = 254,973,074,818.96/442,232.91
  6. Step 6: Final answer
    x = 576,558.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.