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Finding the Fourth Proportional to 318,025.40, 439,264.52 and 237,809.80

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Solution

The fourth proportional to 318,025.40, 439,264.52 and 237,809.80 is: 328,468.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,025.40 : 439,264.52 = 237,809.80 : x
  2. Step 2: Convert to fraction form
    318,025.40/439,264.52 = 237,809.80/x
  3. Step 3: Cross multiply
    318,025.40x = 439,264.52 × 237,809.80
  4. Step 4: Simplify right side
    318,025.40x = 104,461,407,648.30
  5. Step 5: Solve for x
    x = 104,461,407,648.30/318,025.40
  6. Step 6: Final answer
    x = 328,468.76

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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.