Home / 257,458.40-355,273.20-144,259.28

Finding the Fourth Proportional to 257,458.40, 355,273.20 and 144,259.28

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Solution

The fourth proportional to 257,458.40, 355,273.20 and 144,259.28 is: 199,066.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,458.40 : 355,273.20 = 144,259.28 : x
  2. Step 2: Convert to fraction form
    257,458.40/355,273.20 = 144,259.28/x
  3. Step 3: Cross multiply
    257,458.40x = 355,273.20 × 144,259.28
  4. Step 4: Simplify right side
    257,458.40x = 51,251,456,035.30
  5. Step 5: Solve for x
    x = 51,251,456,035.30/257,458.40
  6. Step 6: Final answer
    x = 199,066.94

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1.5x scale

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.