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Finding the Fourth Proportional to 257,605.27, 355,498.95 and 155,616.58

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Solution

The fourth proportional to 257,605.27, 355,498.95 and 155,616.58 is: 214,753.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,605.27 : 355,498.95 = 155,616.58 : x
  2. Step 2: Convert to fraction form
    257,605.27/355,498.95 = 155,616.58/x
  3. Step 3: Cross multiply
    257,605.27x = 355,498.95 × 155,616.58
  4. Step 4: Simplify right side
    257,605.27x = 55,321,530,792.59
  5. Step 5: Solve for x
    x = 55,321,530,792.59/257,605.27
  6. Step 6: Final answer
    x = 214,753.10

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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.