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Finding the Fourth Proportional to 318,539.52, 477,248.77 and 299,575.80

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Solution

The fourth proportional to 318,539.52, 477,248.77 and 299,575.80 is: 448,836.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,539.52 : 477,248.77 = 299,575.80 : x
  2. Step 2: Convert to fraction form
    318,539.52/477,248.77 = 299,575.80/x
  3. Step 3: Cross multiply
    318,539.52x = 477,248.77 × 299,575.80
  4. Step 4: Simplify right side
    318,539.52x = 142,972,178,187.64
  5. Step 5: Solve for x
    x = 142,972,178,187.64/318,539.52
  6. Step 6: Final answer
    x = 448,836.55

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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.