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Finding the Fourth Proportional to 365,806.40, 548,472.80 and 155,387.20

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Solution

The fourth proportional to 365,806.40, 548,472.80 and 155,387.20 is: 232,980.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,806.40 : 548,472.80 = 155,387.20 : x
  2. Step 2: Convert to fraction form
    365,806.40/548,472.80 = 155,387.20/x
  3. Step 3: Cross multiply
    365,806.40x = 548,472.80 × 155,387.20
  4. Step 4: Simplify right side
    365,806.40x = 85,225,652,668.16
  5. Step 5: Solve for x
    x = 85,225,652,668.16/365,806.40
  6. Step 6: Final answer
    x = 232,980.21

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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.