Home / 213,613.35-320,490.17-87,359.78

Finding the Fourth Proportional to 213,613.35, 320,490.17 and 87,359.78

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Solution

The fourth proportional to 213,613.35, 320,490.17 and 87,359.78 is: 131,068.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,613.35 : 320,490.17 = 87,359.78 : x
  2. Step 2: Convert to fraction form
    213,613.35/320,490.17 = 87,359.78/x
  3. Step 3: Cross multiply
    213,613.35x = 320,490.17 × 87,359.78
  4. Step 4: Simplify right side
    213,613.35x = 27,997,949,140.91
  5. Step 5: Solve for x
    x = 27,997,949,140.91/213,613.35
  6. Step 6: Final answer
    x = 131,068.35

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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.