Home / 145,612.26-218,418.30-40,431.20

Finding the Fourth Proportional to 145,612.26, 218,418.30 and 40,431.20

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Solution

The fourth proportional to 145,612.26, 218,418.30 and 40,431.20 is: 60,646.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,612.26 : 218,418.30 = 40,431.20 : x
  2. Step 2: Convert to fraction form
    145,612.26/218,418.30 = 40,431.20/x
  3. Step 3: Cross multiply
    145,612.26x = 218,418.30 × 40,431.20
  4. Step 4: Simplify right side
    145,612.26x = 8,830,913,970.96
  5. Step 5: Solve for x
    x = 8,830,913,970.96/145,612.26
  6. Step 6: Final answer
    x = 60,646.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.