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Finding the Fourth Proportional to 230,779.38, 346,323.69 and 81,020.11

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Solution

The fourth proportional to 230,779.38, 346,323.69 and 81,020.11 is: 121,584.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,779.38 : 346,323.69 = 81,020.11 : x
  2. Step 2: Convert to fraction form
    230,779.38/346,323.69 = 81,020.11/x
  3. Step 3: Cross multiply
    230,779.38x = 346,323.69 × 81,020.11
  4. Step 4: Simplify right side
    230,779.38x = 28,059,183,459.41
  5. Step 5: Solve for x
    x = 28,059,183,459.41/230,779.38
  6. Step 6: Final answer
    x = 121,584.45

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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.