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Finding the Fourth Proportional to 499,984.11, 749,981.03 and 126,007.11

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Solution

The fourth proportional to 499,984.11, 749,981.03 and 126,007.11 is: 189,011.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,984.11 : 749,981.03 = 126,007.11 : x
  2. Step 2: Convert to fraction form
    499,984.11/749,981.03 = 126,007.11/x
  3. Step 3: Cross multiply
    499,984.11x = 749,981.03 × 126,007.11
  4. Step 4: Simplify right side
    499,984.11x = 94,502,941,515.09
  5. Step 5: Solve for x
    x = 94,502,941,515.09/499,984.11
  6. Step 6: Final answer
    x = 189,011.89

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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.