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Finding the Fourth Proportional to 479,876.81, 720,258.02 and 243,385.56

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Solution

The fourth proportional to 479,876.81, 720,258.02 and 243,385.56 is: 365,302.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,876.81 : 720,258.02 = 243,385.56 : x
  2. Step 2: Convert to fraction form
    479,876.81/720,258.02 = 243,385.56/x
  3. Step 3: Cross multiply
    479,876.81x = 720,258.02 × 243,385.56
  4. Step 4: Simplify right side
    479,876.81x = 175,300,400,325.26
  5. Step 5: Solve for x
    x = 175,300,400,325.26/479,876.81
  6. Step 6: Final answer
    x = 365,302.92

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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.