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Finding the Fourth Proportional to 221,312.52, 305,410.50 and 125,819.19

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Solution

The fourth proportional to 221,312.52, 305,410.50 and 125,819.19 is: 173,630.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,312.52 : 305,410.50 = 125,819.19 : x
  2. Step 2: Convert to fraction form
    221,312.52/305,410.50 = 125,819.19/x
  3. Step 3: Cross multiply
    221,312.52x = 305,410.50 × 125,819.19
  4. Step 4: Simplify right side
    221,312.52x = 38,426,501,727.50
  5. Step 5: Solve for x
    x = 38,426,501,727.50/221,312.52
  6. Step 6: Final answer
    x = 173,630.04

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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.