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Finding the Fourth Proportional to 260,837.70, 391,256.55 and 243,341.70

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Solution

The fourth proportional to 260,837.70, 391,256.55 and 243,341.70 is: 365,012.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,837.70 : 391,256.55 = 243,341.70 : x
  2. Step 2: Convert to fraction form
    260,837.70/391,256.55 = 243,341.70/x
  3. Step 3: Cross multiply
    260,837.70x = 391,256.55 × 243,341.70
  4. Step 4: Simplify right side
    260,837.70x = 95,209,034,013.14
  5. Step 5: Solve for x
    x = 95,209,034,013.14/260,837.70
  6. Step 6: Final answer
    x = 365,012.55

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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.