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Finding the Fourth Proportional to 260,042.30, 390,034.65 and 73,072.70

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Solution

The fourth proportional to 260,042.30, 390,034.65 and 73,072.70 is: 109,600.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,042.30 : 390,034.65 = 73,072.70 : x
  2. Step 2: Convert to fraction form
    260,042.30/390,034.65 = 73,072.70/x
  3. Step 3: Cross multiply
    260,042.30x = 390,034.65 × 73,072.70
  4. Step 4: Simplify right side
    260,042.30x = 28,500,884,969.06
  5. Step 5: Solve for x
    x = 28,500,884,969.06/260,042.30
  6. Step 6: Final answer
    x = 109,600.96

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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.