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Finding the Fourth Proportional to 551,842.80, 761,531.40 and 325,561.20

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Solution

The fourth proportional to 551,842.80, 761,531.40 and 325,561.20 is: 449,267.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,842.80 : 761,531.40 = 325,561.20 : x
  2. Step 2: Convert to fraction form
    551,842.80/761,531.40 = 325,561.20/x
  3. Step 3: Cross multiply
    551,842.80x = 761,531.40 × 325,561.20
  4. Step 4: Simplify right side
    551,842.80x = 247,925,076,421.68
  5. Step 5: Solve for x
    x = 247,925,076,421.68/551,842.80
  6. Step 6: Final answer
    x = 449,267.57

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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.