Home / 392,642,479.10-541,846,488.99-216,433,417.10

Finding the Fourth Proportional to 392,642,479.10, 541,846,488.99 and 216,433,417.10

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Solution

The fourth proportional to 392,642,479.10, 541,846,488.99 and 216,433,417.10 is: 298,678,042.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,642,479.10 : 541,846,488.99 = 216,433,417.10 : x
  2. Step 2: Convert to fraction form
    392,642,479.10/541,846,488.99 = 216,433,417.10/x
  3. Step 3: Cross multiply
    392,642,479.10x = 541,846,488.99 × 216,433,417.10
  4. Step 4: Simplify right side
    392,642,479.10x = 117,273,687,154,661,056
  5. Step 5: Solve for x
    x = 117,273,687,154,661,056/392,642,479.10
  6. Step 6: Final answer
    x = 298,678,042.75

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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.