Home / 218,901.30-328,327.65-61,145.70

Finding the Fourth Proportional to 218,901.30, 328,327.65 and 61,145.70

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Solution

The fourth proportional to 218,901.30, 328,327.65 and 61,145.70 is: 91,711.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,901.30 : 328,327.65 = 61,145.70 : x
  2. Step 2: Convert to fraction form
    218,901.30/328,327.65 = 61,145.70/x
  3. Step 3: Cross multiply
    218,901.30x = 328,327.65 × 61,145.70
  4. Step 4: Simplify right side
    218,901.30x = 20,075,823,988.61
  5. Step 5: Solve for x
    x = 20,075,823,988.61/218,901.30
  6. Step 6: Final answer
    x = 91,711.76

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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.