Home / 280,861,382.12-421,140,593.82-127,423,720.04

Finding the Fourth Proportional to 280,861,382.12, 421,140,593.82 and 127,423,720.04

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Solution

The fourth proportional to 280,861,382.12, 421,140,593.82 and 127,423,720.04 is: 191,066,855.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,861,382.12 : 421,140,593.82 = 127,423,720.04 : x
  2. Step 2: Convert to fraction form
    280,861,382.12/421,140,593.82 = 127,423,720.04/x
  3. Step 3: Cross multiply
    280,861,382.12x = 421,140,593.82 × 127,423,720.04
  4. Step 4: Simplify right side
    280,861,382.12x = 53,663,301,124,399,040
  5. Step 5: Solve for x
    x = 53,663,301,124,399,040/280,861,382.12
  6. Step 6: Final answer
    x = 191,066,855.54

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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.