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Finding the Fourth Proportional to 257,641.89, 355,545.48 and 142,937.93

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Solution

The fourth proportional to 257,641.89, 355,545.48 and 142,937.93 is: 197,254.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,641.89 : 355,545.48 = 142,937.93 : x
  2. Step 2: Convert to fraction form
    257,641.89/355,545.48 = 142,937.93/x
  3. Step 3: Cross multiply
    257,641.89x = 355,545.48 × 142,937.93
  4. Step 4: Simplify right side
    257,641.89x = 50,820,933,154.33
  5. Step 5: Solve for x
    x = 50,820,933,154.33/257,641.89
  6. Step 6: Final answer
    x = 197,254.15

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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.