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Finding the Fourth Proportional to 316,778.88, 475,128.70 and 103,528.96

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Solution

The fourth proportional to 316,778.88, 475,128.70 and 103,528.96 is: 155,280.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,778.88 : 475,128.70 = 103,528.96 : x
  2. Step 2: Convert to fraction form
    316,778.88/475,128.70 = 103,528.96/x
  3. Step 3: Cross multiply
    316,778.88x = 475,128.70 × 103,528.96
  4. Step 4: Simplify right side
    316,778.88x = 49,189,577,283.86
  5. Step 5: Solve for x
    x = 49,189,577,283.86/316,778.88
  6. Step 6: Final answer
    x = 155,280.48

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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.