Home / 257,656.78-355,567.25-142,937.70

Finding the Fourth Proportional to 257,656.78, 355,567.25 and 142,937.70

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Solution

The fourth proportional to 257,656.78, 355,567.25 and 142,937.70 is: 197,254.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,656.78 : 355,567.25 = 142,937.70 : x
  2. Step 2: Convert to fraction form
    257,656.78/355,567.25 = 142,937.70/x
  3. Step 3: Cross multiply
    257,656.78x = 355,567.25 × 142,937.70
  4. Step 4: Simplify right side
    257,656.78x = 50,823,963,934.29
  5. Step 5: Solve for x
    x = 50,823,963,934.29/257,656.78
  6. Step 6: Final answer
    x = 197,254.52

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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.