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Finding the Fourth Proportional to 426,254.40, 587,869.92 and 256,456.80

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Solution

The fourth proportional to 426,254.40, 587,869.92 and 256,456.80 is: 353,693.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,254.40 : 587,869.92 = 256,456.80 : x
  2. Step 2: Convert to fraction form
    426,254.40/587,869.92 = 256,456.80/x
  3. Step 3: Cross multiply
    426,254.40x = 587,869.92 × 256,456.80
  4. Step 4: Simplify right side
    426,254.40x = 150,763,238,499.46
  5. Step 5: Solve for x
    x = 150,763,238,499.46/426,254.40
  6. Step 6: Final answer
    x = 353,693.10

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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.