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Finding the Fourth Proportional to 221,312.48, 305,437.04 and 125,833.48

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Solution

The fourth proportional to 221,312.48, 305,437.04 and 125,833.48 is: 173,664.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,312.48 : 305,437.04 = 125,833.48 : x
  2. Step 2: Convert to fraction form
    221,312.48/305,437.04 = 125,833.48/x
  3. Step 3: Cross multiply
    221,312.48x = 305,437.04 × 125,833.48
  4. Step 4: Simplify right side
    221,312.48x = 38,434,205,664.10
  5. Step 5: Solve for x
    x = 38,434,205,664.10/221,312.48
  6. Step 6: Final answer
    x = 173,664.88

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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.