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Finding the Fourth Proportional to 279,865.48, 386,224.86 and 159,027.34

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Solution

The fourth proportional to 279,865.48, 386,224.86 and 159,027.34 is: 219,463.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,865.48 : 386,224.86 = 159,027.34 : x
  2. Step 2: Convert to fraction form
    279,865.48/386,224.86 = 159,027.34/x
  3. Step 3: Cross multiply
    279,865.48x = 386,224.86 × 159,027.34
  4. Step 4: Simplify right side
    279,865.48x = 61,420,312,127.67
  5. Step 5: Solve for x
    x = 61,420,312,127.67/279,865.48
  6. Step 6: Final answer
    x = 219,463.69

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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.