Home / 272,554.10-408,842.43-80,428.53

Finding the Fourth Proportional to 272,554.10, 408,842.43 and 80,428.53

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Solution

The fourth proportional to 272,554.10, 408,842.43 and 80,428.53 is: 120,646.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,554.10 : 408,842.43 = 80,428.53 : x
  2. Step 2: Convert to fraction form
    272,554.10/408,842.43 = 80,428.53/x
  3. Step 3: Cross multiply
    272,554.10x = 408,842.43 × 80,428.53
  4. Step 4: Simplify right side
    272,554.10x = 32,882,596,878.08
  5. Step 5: Solve for x
    x = 32,882,596,878.08/272,554.10
  6. Step 6: Final answer
    x = 120,646.13

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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.