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Finding the Fourth Proportional to 305,545.83, 421,646.91 and 169,571.88

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Solution

The fourth proportional to 305,545.83, 421,646.91 and 169,571.88 is: 234,005.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,545.83 : 421,646.91 = 169,571.88 : x
  2. Step 2: Convert to fraction form
    305,545.83/421,646.91 = 169,571.88/x
  3. Step 3: Cross multiply
    305,545.83x = 421,646.91 × 169,571.88
  4. Step 4: Simplify right side
    305,545.83x = 71,499,459,431.15
  5. Step 5: Solve for x
    x = 71,499,459,431.15/305,545.83
  6. Step 6: Final answer
    x = 234,005.68

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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.