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Finding the Fourth Proportional to 221,368.32, 305,475.84 and 125,898.24

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Solution

The fourth proportional to 221,368.32, 305,475.84 and 125,898.24 is: 173,732.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,368.32 : 305,475.84 = 125,898.24 : x
  2. Step 2: Convert to fraction form
    221,368.32/305,475.84 = 125,898.24/x
  3. Step 3: Cross multiply
    221,368.32x = 305,475.84 × 125,898.24
  4. Step 4: Simplify right side
    221,368.32x = 38,458,870,618.52
  5. Step 5: Solve for x
    x = 38,458,870,618.52/221,368.32
  6. Step 6: Final answer
    x = 173,732.50

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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.