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Finding the Fourth Proportional to 218,888.40, 328,332.72 and 169,041.36

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Solution

The fourth proportional to 218,888.40, 328,332.72 and 169,041.36 is: 253,562.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,888.40 : 328,332.72 = 169,041.36 : x
  2. Step 2: Convert to fraction form
    218,888.40/328,332.72 = 169,041.36/x
  3. Step 3: Cross multiply
    218,888.40x = 328,332.72 × 169,041.36
  4. Step 4: Simplify right side
    218,888.40x = 55,501,809,521.30
  5. Step 5: Solve for x
    x = 55,501,809,521.30/218,888.40
  6. Step 6: Final answer
    x = 253,562.13

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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.