Home / 199,418,947.40-299,128,421.10-187,325,712.20

Finding the Fourth Proportional to 199,418,947.40, 299,128,421.10 and 187,325,712.20

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Solution

The fourth proportional to 199,418,947.40, 299,128,421.10 and 187,325,712.20 is: 280,988,568.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,418,947.40 : 299,128,421.10 = 187,325,712.20 : x
  2. Step 2: Convert to fraction form
    199,418,947.40/299,128,421.10 = 187,325,712.20/x
  3. Step 3: Cross multiply
    199,418,947.40x = 299,128,421.10 × 187,325,712.20
  4. Step 4: Simplify right side
    199,418,947.40x = 56,034,444,521,819,008
  5. Step 5: Solve for x
    x = 56,034,444,521,819,008/199,418,947.40
  6. Step 6: Final answer
    x = 280,988,568.30

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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.