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Finding the Fourth Proportional to 257,456.68, 355,188.85 and 160,604.17

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Solution

The fourth proportional to 257,456.68, 355,188.85 and 160,604.17 is: 221,570.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,456.68 : 355,188.85 = 160,604.17 : x
  2. Step 2: Convert to fraction form
    257,456.68/355,188.85 = 160,604.17/x
  3. Step 3: Cross multiply
    257,456.68x = 355,188.85 × 160,604.17
  4. Step 4: Simplify right side
    257,456.68x = 57,044,809,158.02
  5. Step 5: Solve for x
    x = 57,044,809,158.02/257,456.68
  6. Step 6: Final answer
    x = 221,570.52

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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.