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Finding the Fourth Proportional to 485,837.23, 728,729.56 and 148,878.85

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Solution

The fourth proportional to 485,837.23, 728,729.56 and 148,878.85 is: 223,310.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,837.23 : 728,729.56 = 148,878.85 : x
  2. Step 2: Convert to fraction form
    485,837.23/728,729.56 = 148,878.85/x
  3. Step 3: Cross multiply
    485,837.23x = 728,729.56 × 148,878.85
  4. Step 4: Simplify right side
    485,837.23x = 108,492,418,853.81
  5. Step 5: Solve for x
    x = 108,492,418,853.81/485,837.23
  6. Step 6: Final answer
    x = 223,310.22

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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.