Home / 289,331.08-399,184.63-187,434.65

Finding the Fourth Proportional to 289,331.08, 399,184.63 and 187,434.65

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Solution

The fourth proportional to 289,331.08, 399,184.63 and 187,434.65 is: 258,600.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,331.08 : 399,184.63 = 187,434.65 : x
  2. Step 2: Convert to fraction form
    289,331.08/399,184.63 = 187,434.65/x
  3. Step 3: Cross multiply
    289,331.08x = 399,184.63 × 187,434.65
  4. Step 4: Simplify right side
    289,331.08x = 74,821,031,938.80
  5. Step 5: Solve for x
    x = 74,821,031,938.80/289,331.08
  6. Step 6: Final answer
    x = 258,600.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.