Home / 257,391.12-385,561.08-132,469.68

Finding the Fourth Proportional to 257,391.12, 385,561.08 and 132,469.68

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Solution

The fourth proportional to 257,391.12, 385,561.08 and 132,469.68 is: 198,434.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,391.12 : 385,561.08 = 132,469.68 : x
  2. Step 2: Convert to fraction form
    257,391.12/385,561.08 = 132,469.68/x
  3. Step 3: Cross multiply
    257,391.12x = 385,561.08 × 132,469.68
  4. Step 4: Simplify right side
    257,391.12x = 51,075,152,888.05
  5. Step 5: Solve for x
    x = 51,075,152,888.05/257,391.12
  6. Step 6: Final answer
    x = 198,434.01

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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.