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Finding the Fourth Proportional to 279,886.13, 386,242.95 and 159,027.57

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Solution

The fourth proportional to 279,886.13, 386,242.95 and 159,027.57 is: 219,458.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,886.13 : 386,242.95 = 159,027.57 : x
  2. Step 2: Convert to fraction form
    279,886.13/386,242.95 = 159,027.57/x
  3. Step 3: Cross multiply
    279,886.13x = 386,242.95 × 159,027.57
  4. Step 4: Simplify right side
    279,886.13x = 61,423,277,768.13
  5. Step 5: Solve for x
    x = 61,423,277,768.13/279,886.13
  6. Step 6: Final answer
    x = 219,458.10

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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.