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Finding the Fourth Proportional to 318,479.40, 477,642.24 and 93,778.74

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Solution

The fourth proportional to 318,479.40, 477,642.24 and 93,778.74 is: 140,645.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,479.40 : 477,642.24 = 93,778.74 : x
  2. Step 2: Convert to fraction form
    318,479.40/477,642.24 = 93,778.74/x
  3. Step 3: Cross multiply
    318,479.40x = 477,642.24 × 93,778.74
  4. Step 4: Simplify right side
    318,479.40x = 44,792,687,437.98
  5. Step 5: Solve for x
    x = 44,792,687,437.98/318,479.40
  6. Step 6: Final answer
    x = 140,645.48

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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.