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Finding the Fourth Proportional to 316,999.95, 475,544.34 and 103,784.55

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Solution

The fourth proportional to 316,999.95, 475,544.34 and 103,784.55 is: 155,691.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,999.95 : 475,544.34 = 103,784.55 : x
  2. Step 2: Convert to fraction form
    316,999.95/475,544.34 = 103,784.55/x
  3. Step 3: Cross multiply
    316,999.95x = 475,544.34 × 103,784.55
  4. Step 4: Simplify right side
    316,999.95x = 49,354,155,331.95
  5. Step 5: Solve for x
    x = 49,354,155,331.95/316,999.95
  6. Step 6: Final answer
    x = 155,691.37

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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.