Home / 318,569.31-477,632.52-140,979.42

Finding the Fourth Proportional to 318,569.31, 477,632.52 and 140,979.42

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Solution

The fourth proportional to 318,569.31, 477,632.52 and 140,979.42 is: 211,371.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,569.31 : 477,632.52 = 140,979.42 : x
  2. Step 2: Convert to fraction form
    318,569.31/477,632.52 = 140,979.42/x
  3. Step 3: Cross multiply
    318,569.31x = 477,632.52 × 140,979.42
  4. Step 4: Simplify right side
    318,569.31x = 67,336,355,642.74
  5. Step 5: Solve for x
    x = 67,336,355,642.74/318,569.31
  6. Step 6: Final answer
    x = 211,371.13

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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.