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Finding the Fourth Proportional to 426,125.42, 639,473.25 and 176,807.42

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Solution

The fourth proportional to 426,125.42, 639,473.25 and 176,807.42 is: 265,329.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,125.42 : 639,473.25 = 176,807.42 : x
  2. Step 2: Convert to fraction form
    426,125.42/639,473.25 = 176,807.42/x
  3. Step 3: Cross multiply
    426,125.42x = 639,473.25 × 176,807.42
  4. Step 4: Simplify right side
    426,125.42x = 113,063,615,491.52
  5. Step 5: Solve for x
    x = 113,063,615,491.52/426,125.42
  6. Step 6: Final answer
    x = 265,329.43

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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.