Home / 257,154.06-354,870.26-143,978.70

Finding the Fourth Proportional to 257,154.06, 354,870.26 and 143,978.70

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Solution

The fourth proportional to 257,154.06, 354,870.26 and 143,978.70 is: 198,689.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,154.06 : 354,870.26 = 143,978.70 : x
  2. Step 2: Convert to fraction form
    257,154.06/354,870.26 = 143,978.70/x
  3. Step 3: Cross multiply
    257,154.06x = 354,870.26 × 143,978.70
  4. Step 4: Simplify right side
    257,154.06x = 51,093,758,703.46
  5. Step 5: Solve for x
    x = 51,093,758,703.46/257,154.06
  6. Step 6: Final answer
    x = 198,689.29

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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.