Home / 397,139.76-548,056.13-215,851.74

Finding the Fourth Proportional to 397,139.76, 548,056.13 and 215,851.74

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Solution

The fourth proportional to 397,139.76, 548,056.13 and 215,851.74 is: 297,877.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,139.76 : 548,056.13 = 215,851.74 : x
  2. Step 2: Convert to fraction form
    397,139.76/548,056.13 = 215,851.74/x
  3. Step 3: Cross multiply
    397,139.76x = 548,056.13 × 215,851.74
  4. Step 4: Simplify right side
    397,139.76x = 118,298,866,143.70
  5. Step 5: Solve for x
    x = 118,298,866,143.70/397,139.76
  6. Step 6: Final answer
    x = 297,877.17

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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.