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Finding the Fourth Proportional to 261,079.49, 360,262.62 and 153,643.11

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Solution

The fourth proportional to 261,079.49, 360,262.62 and 153,643.11 is: 212,011.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,079.49 : 360,262.62 = 153,643.11 : x
  2. Step 2: Convert to fraction form
    261,079.49/360,262.62 = 153,643.11/x
  3. Step 3: Cross multiply
    261,079.49x = 360,262.62 × 153,643.11
  4. Step 4: Simplify right side
    261,079.49x = 55,351,869,353.55
  5. Step 5: Solve for x
    x = 55,351,869,353.55/261,079.49
  6. Step 6: Final answer
    x = 212,011.56

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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.