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Finding the Fourth Proportional to 261,538.92, 360,920.34 and 154,113.48

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Solution

The fourth proportional to 261,538.92, 360,920.34 and 154,113.48 is: 212,674.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,538.92 : 360,920.34 = 154,113.48 : x
  2. Step 2: Convert to fraction form
    261,538.92/360,920.34 = 154,113.48/x
  3. Step 3: Cross multiply
    261,538.92x = 360,920.34 × 154,113.48
  4. Step 4: Simplify right side
    261,538.92x = 55,622,689,600.18
  5. Step 5: Solve for x
    x = 55,622,689,600.18/261,538.92
  6. Step 6: Final answer
    x = 212,674.62

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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.