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Finding the Fourth Proportional to 537,915.68, 742,101 and 320,080.88

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Solution

The fourth proportional to 537,915.68, 742,101 and 320,080.88 is: 441,579.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,915.68 : 742,101 = 320,080.88 : x
  2. Step 2: Convert to fraction form
    537,915.68/742,101 = 320,080.88/x
  3. Step 3: Cross multiply
    537,915.68x = 742,101 × 320,080.88
  4. Step 4: Simplify right side
    537,915.68x = 237,532,341,128.88
  5. Step 5: Solve for x
    x = 237,532,341,128.88/537,915.68
  6. Step 6: Final answer
    x = 441,579.14

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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.