Home / 256,626,512.80-384,939,769.20-84,061,715.20

Finding the Fourth Proportional to 256,626,512.80, 384,939,769.20 and 84,061,715.20

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Solution

The fourth proportional to 256,626,512.80, 384,939,769.20 and 84,061,715.20 is: 126,092,572.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,626,512.80 : 384,939,769.20 = 84,061,715.20 : x
  2. Step 2: Convert to fraction form
    256,626,512.80/384,939,769.20 = 84,061,715.20/x
  3. Step 3: Cross multiply
    256,626,512.80x = 384,939,769.20 × 84,061,715.20
  4. Step 4: Simplify right side
    256,626,512.80x = 32,358,697,247,644,132
  5. Step 5: Solve for x
    x = 32,358,697,247,644,132/256,626,512.80
  6. Step 6: Final answer
    x = 126,092,572.80

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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.