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Finding the Fourth Proportional to 280,227.74, 386,722.79 and 159,386.40

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Solution

The fourth proportional to 280,227.74, 386,722.79 and 159,386.40 is: 219,958.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,227.74 : 386,722.79 = 159,386.40 : x
  2. Step 2: Convert to fraction form
    280,227.74/386,722.79 = 159,386.40/x
  3. Step 3: Cross multiply
    280,227.74x = 386,722.79 × 159,386.40
  4. Step 4: Simplify right side
    280,227.74x = 61,638,353,096.82
  5. Step 5: Solve for x
    x = 61,638,353,096.82/280,227.74
  6. Step 6: Final answer
    x = 219,958.07

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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.