Home / 279,936,271.90-419,904,407.85-256,127,715.10

Finding the Fourth Proportional to 279,936,271.90, 419,904,407.85 and 256,127,715.10

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Solution

The fourth proportional to 279,936,271.90, 419,904,407.85 and 256,127,715.10 is: 384,191,572.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,271.90 : 419,904,407.85 = 256,127,715.10 : x
  2. Step 2: Convert to fraction form
    279,936,271.90/419,904,407.85 = 256,127,715.10/x
  3. Step 3: Cross multiply
    279,936,271.90x = 419,904,407.85 × 256,127,715.10
  4. Step 4: Simplify right side
    279,936,271.90x = 107,549,156,543,039,008
  5. Step 5: Solve for x
    x = 107,549,156,543,039,008/279,936,271.90
  6. Step 6: Final answer
    x = 384,191,572.65

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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.