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Finding the Fourth Proportional to 546,228.78, 819,343.17 and 172,280.94

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Solution

The fourth proportional to 546,228.78, 819,343.17 and 172,280.94 is: 258,421.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,228.78 : 819,343.17 = 172,280.94 : x
  2. Step 2: Convert to fraction form
    546,228.78/819,343.17 = 172,280.94/x
  3. Step 3: Cross multiply
    546,228.78x = 819,343.17 × 172,280.94
  4. Step 4: Simplify right side
    546,228.78x = 141,157,211,510.18
  5. Step 5: Solve for x
    x = 141,157,211,510.18/546,228.78
  6. Step 6: Final answer
    x = 258,421.41

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Similar ratio
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1.5x scale

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.