Home / 399,711.24-551,603.22-218,422.74

Finding the Fourth Proportional to 399,711.24, 551,603.22 and 218,422.74

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Solution

The fourth proportional to 399,711.24, 551,603.22 and 218,422.74 is: 301,424.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,711.24 : 551,603.22 = 218,422.74 : x
  2. Step 2: Convert to fraction form
    399,711.24/551,603.22 = 218,422.74/x
  3. Step 3: Cross multiply
    399,711.24x = 551,603.22 × 218,422.74
  4. Step 4: Simplify right side
    399,711.24x = 120,482,686,705.22
  5. Step 5: Solve for x
    x = 120,482,686,705.22/399,711.24
  6. Step 6: Final answer
    x = 301,424.31

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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.