Home / 256,619,999.20-384,926,499.60-84,102,440.80

Finding the Fourth Proportional to 256,619,999.20, 384,926,499.60 and 84,102,440.80

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Solution

The fourth proportional to 256,619,999.20, 384,926,499.60 and 84,102,440.80 is: 126,152,514.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,619,999.20 : 384,926,499.60 = 84,102,440.80 : x
  2. Step 2: Convert to fraction form
    256,619,999.20/384,926,499.60 = 84,102,440.80/x
  3. Step 3: Cross multiply
    256,619,999.20x = 384,926,499.60 × 84,102,440.80
  4. Step 4: Simplify right side
    256,619,999.20x = 32,373,258,144,960,224
  5. Step 5: Solve for x
    x = 32,373,258,144,960,224/256,619,999.20
  6. Step 6: Final answer
    x = 126,152,514.40

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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.