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Finding the Fourth Proportional to 551,842.43, 761,538.56 and 310,119.80

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Solution

The fourth proportional to 551,842.43, 761,538.56 and 310,119.80 is: 427,963.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,842.43 : 761,538.56 = 310,119.80 : x
  2. Step 2: Convert to fraction form
    551,842.43/761,538.56 = 310,119.80/x
  3. Step 3: Cross multiply
    551,842.43x = 761,538.56 × 310,119.80
  4. Step 4: Simplify right side
    551,842.43x = 236,168,180,561.20
  5. Step 5: Solve for x
    x = 236,168,180,561.20/551,842.43
  6. Step 6: Final answer
    x = 427,963.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.