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Finding the Fourth Proportional to 368,743.20, 553,114.80 and 132,000.45

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Solution

The fourth proportional to 368,743.20, 553,114.80 and 132,000.45 is: 198,000.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,743.20 : 553,114.80 = 132,000.45 : x
  2. Step 2: Convert to fraction form
    368,743.20/553,114.80 = 132,000.45/x
  3. Step 3: Cross multiply
    368,743.20x = 553,114.80 × 132,000.45
  4. Step 4: Simplify right side
    368,743.20x = 73,011,402,501.66
  5. Step 5: Solve for x
    x = 73,011,402,501.66/368,743.20
  6. Step 6: Final answer
    x = 198,000.68

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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.