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Finding the Fourth Proportional to 499,218.90, 748,937.70 and 199,624.20

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Solution

The fourth proportional to 499,218.90, 748,937.70 and 199,624.20 is: 299,480.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,218.90 : 748,937.70 = 199,624.20 : x
  2. Step 2: Convert to fraction form
    499,218.90/748,937.70 = 199,624.20/x
  3. Step 3: Cross multiply
    499,218.90x = 748,937.70 × 199,624.20
  4. Step 4: Simplify right side
    499,218.90x = 149,506,089,212.34
  5. Step 5: Solve for x
    x = 149,506,089,212.34/499,218.90
  6. Step 6: Final answer
    x = 299,480.03

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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.