Home / 256,981.20-385,486.92-99,210.48

Finding the Fourth Proportional to 256,981.20, 385,486.92 and 99,210.48

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Solution

The fourth proportional to 256,981.20, 385,486.92 and 99,210.48 is: 148,821.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,981.20 : 385,486.92 = 99,210.48 : x
  2. Step 2: Convert to fraction form
    256,981.20/385,486.92 = 99,210.48/x
  3. Step 3: Cross multiply
    256,981.20x = 385,486.92 × 99,210.48
  4. Step 4: Simplify right side
    256,981.20x = 38,244,342,366.92
  5. Step 5: Solve for x
    x = 38,244,342,366.92/256,981.20
  6. Step 6: Final answer
    x = 148,821.56

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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.