Home / 258,434.40-387,943.20-199,531.20

Finding the Fourth Proportional to 258,434.40, 387,943.20 and 199,531.20

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Solution

The fourth proportional to 258,434.40, 387,943.20 and 199,531.20 is: 299,521.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,434.40 : 387,943.20 = 199,531.20 : x
  2. Step 2: Convert to fraction form
    258,434.40/387,943.20 = 199,531.20/x
  3. Step 3: Cross multiply
    258,434.40x = 387,943.20 × 199,531.20
  4. Step 4: Simplify right side
    258,434.40x = 77,406,772,227.84
  5. Step 5: Solve for x
    x = 77,406,772,227.84/258,434.40
  6. Step 6: Final answer
    x = 299,521.94

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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.