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Finding the Fourth Proportional to 385,241.48, 577,718.54 and 132,450.40

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Solution

The fourth proportional to 385,241.48, 577,718.54 and 132,450.40 is: 198,626.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,241.48 : 577,718.54 = 132,450.40 : x
  2. Step 2: Convert to fraction form
    385,241.48/577,718.54 = 132,450.40/x
  3. Step 3: Cross multiply
    385,241.48x = 577,718.54 × 132,450.40
  4. Step 4: Simplify right side
    385,241.48x = 76,519,048,159.57
  5. Step 5: Solve for x
    x = 76,519,048,159.57/385,241.48
  6. Step 6: Final answer
    x = 198,626.19

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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.