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Finding the Fourth Proportional to 305,578.68, 421,690.48 and 169,612.24

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Solution

The fourth proportional to 305,578.68, 421,690.48 and 169,612.24 is: 234,060.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,578.68 : 421,690.48 = 169,612.24 : x
  2. Step 2: Convert to fraction form
    305,578.68/421,690.48 = 169,612.24/x
  3. Step 3: Cross multiply
    305,578.68x = 421,690.48 × 169,612.24
  4. Step 4: Simplify right side
    305,578.68x = 71,523,866,899.48
  5. Step 5: Solve for x
    x = 71,523,866,899.48/305,578.68
  6. Step 6: Final answer
    x = 234,060.40

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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.