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Finding the Fourth Proportional to 283,145.60, 424,718.40 and 272,259.20

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Solution

The fourth proportional to 283,145.60, 424,718.40 and 272,259.20 is: 408,388.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,145.60 : 424,718.40 = 272,259.20 : x
  2. Step 2: Convert to fraction form
    283,145.60/424,718.40 = 272,259.20/x
  3. Step 3: Cross multiply
    283,145.60x = 424,718.40 × 272,259.20
  4. Step 4: Simplify right side
    283,145.60x = 115,633,491,809.28
  5. Step 5: Solve for x
    x = 115,633,491,809.28/283,145.60
  6. Step 6: Final answer
    x = 408,388.80

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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.