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Finding the Fourth Proportional to 531,987.13, 734,251.50 and 325,290.86

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Solution

The fourth proportional to 531,987.13, 734,251.50 and 325,290.86 is: 448,968.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,987.13 : 734,251.50 = 325,290.86 : x
  2. Step 2: Convert to fraction form
    531,987.13/734,251.50 = 325,290.86/x
  3. Step 3: Cross multiply
    531,987.13x = 734,251.50 × 325,290.86
  4. Step 4: Simplify right side
    531,987.13x = 238,845,301,891.29
  5. Step 5: Solve for x
    x = 238,845,301,891.29/531,987.13
  6. Step 6: Final answer
    x = 448,968.20

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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.