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Finding the Fourth Proportional to 479,877.81, 720,259.52 and 243,386.56

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Solution

The fourth proportional to 479,877.81, 720,259.52 and 243,386.56 is: 365,304.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,877.81 : 720,259.52 = 243,386.56 : x
  2. Step 2: Convert to fraction form
    479,877.81/720,259.52 = 243,386.56/x
  3. Step 3: Cross multiply
    479,877.81x = 720,259.52 × 243,386.56
  4. Step 4: Simplify right side
    479,877.81x = 175,301,486,880.05
  5. Step 5: Solve for x
    x = 175,301,486,880.05/479,877.81
  6. Step 6: Final answer
    x = 365,304.42

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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.