Home / 257,417.57-355,218.32-142,695.11

Finding the Fourth Proportional to 257,417.57, 355,218.32 and 142,695.11

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Solution

The fourth proportional to 257,417.57, 355,218.32 and 142,695.11 is: 196,909.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,417.57 : 355,218.32 = 142,695.11 : x
  2. Step 2: Convert to fraction form
    257,417.57/355,218.32 = 142,695.11/x
  3. Step 3: Cross multiply
    257,417.57x = 355,218.32 × 142,695.11
  4. Step 4: Simplify right side
    257,417.57x = 50,687,915,827.06
  5. Step 5: Solve for x
    x = 50,687,915,827.06/257,417.57
  6. Step 6: Final answer
    x = 196,909.31

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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.