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Finding the Fourth Proportional to 510,080.40, 763,954.20 and 260,470.80

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Solution

The fourth proportional to 510,080.40, 763,954.20 and 260,470.80 is: 390,110.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,080.40 : 763,954.20 = 260,470.80 : x
  2. Step 2: Convert to fraction form
    510,080.40/763,954.20 = 260,470.80/x
  3. Step 3: Cross multiply
    510,080.40x = 763,954.20 × 260,470.80
  4. Step 4: Simplify right side
    510,080.40x = 198,987,761,637.36
  5. Step 5: Solve for x
    x = 198,987,761,637.36/510,080.40
  6. Step 6: Final answer
    x = 390,110.58

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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.