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Finding the Fourth Proportional to 292,485.80, 438,864.78 and 132,533.48

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Solution

The fourth proportional to 292,485.80, 438,864.78 and 132,533.48 is: 198,861.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,485.80 : 438,864.78 = 132,533.48 : x
  2. Step 2: Convert to fraction form
    292,485.80/438,864.78 = 132,533.48/x
  3. Step 3: Cross multiply
    292,485.80x = 438,864.78 × 132,533.48
  4. Step 4: Simplify right side
    292,485.80x = 58,164,276,542.83
  5. Step 5: Solve for x
    x = 58,164,276,542.83/292,485.80
  6. Step 6: Final answer
    x = 198,861.88

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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.