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Finding the Fourth Proportional to 218,959.04, 328,009.60 and 195,156.16

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Solution

The fourth proportional to 218,959.04, 328,009.60 and 195,156.16 is: 292,351.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,959.04 : 328,009.60 = 195,156.16 : x
  2. Step 2: Convert to fraction form
    218,959.04/328,009.60 = 195,156.16/x
  3. Step 3: Cross multiply
    218,959.04x = 328,009.60 × 195,156.16
  4. Step 4: Simplify right side
    218,959.04x = 64,013,093,979.14
  5. Step 5: Solve for x
    x = 64,013,093,979.14/218,959.04
  6. Step 6: Final answer
    x = 292,351.91

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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.