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Finding the Fourth Proportional to 347,364.40, 519,491.40 and 291,377.20

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Solution

The fourth proportional to 347,364.40, 519,491.40 and 291,377.20 is: 435,761.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,364.40 : 519,491.40 = 291,377.20 : x
  2. Step 2: Convert to fraction form
    347,364.40/519,491.40 = 291,377.20/x
  3. Step 3: Cross multiply
    347,364.40x = 519,491.40 × 291,377.20
  4. Step 4: Simplify right side
    347,364.40x = 151,367,949,556.08
  5. Step 5: Solve for x
    x = 151,367,949,556.08/347,364.40
  6. Step 6: Final answer
    x = 435,761.26

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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.