Home / 257,979.15-355,999.25-143,265.08

Finding the Fourth Proportional to 257,979.15, 355,999.25 and 143,265.08

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Solution

The fourth proportional to 257,979.15, 355,999.25 and 143,265.08 is: 197,699.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,979.15 : 355,999.25 = 143,265.08 : x
  2. Step 2: Convert to fraction form
    257,979.15/355,999.25 = 143,265.08/x
  3. Step 3: Cross multiply
    257,979.15x = 355,999.25 × 143,265.08
  4. Step 4: Simplify right side
    257,979.15x = 51,002,262,279.35
  5. Step 5: Solve for x
    x = 51,002,262,279.35/257,979.15
  6. Step 6: Final answer
    x = 197,699.16

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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.