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Finding the Fourth Proportional to 220,800.81, 304,720.88 and 125,313.66

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Solution

The fourth proportional to 220,800.81, 304,720.88 and 125,313.66 is: 172,941.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,800.81 : 304,720.88 = 125,313.66 : x
  2. Step 2: Convert to fraction form
    220,800.81/304,720.88 = 125,313.66/x
  3. Step 3: Cross multiply
    220,800.81x = 304,720.88 × 125,313.66
  4. Step 4: Simplify right side
    220,800.81x = 38,185,688,124.65
  5. Step 5: Solve for x
    x = 38,185,688,124.65/220,800.81
  6. Step 6: Final answer
    x = 172,941.79

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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.