Home / 257,005.28-354,635.97-142,275.26

Finding the Fourth Proportional to 257,005.28, 354,635.97 and 142,275.26

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Solution

The fourth proportional to 257,005.28, 354,635.97 and 142,275.26 is: 196,322.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,005.28 : 354,635.97 = 142,275.26 : x
  2. Step 2: Convert to fraction form
    257,005.28/354,635.97 = 142,275.26/x
  3. Step 3: Cross multiply
    257,005.28x = 354,635.97 × 142,275.26
  4. Step 4: Simplify right side
    257,005.28x = 50,455,924,837.10
  5. Step 5: Solve for x
    x = 50,455,924,837.10/257,005.28
  6. Step 6: Final answer
    x = 196,322.52

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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.