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Finding the Fourth Proportional to 274,011.40, 411,060.30 and 87,041.80

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Solution

The fourth proportional to 274,011.40, 411,060.30 and 87,041.80 is: 130,576.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,011.40 : 411,060.30 = 87,041.80 : x
  2. Step 2: Convert to fraction form
    274,011.40/411,060.30 = 87,041.80/x
  3. Step 3: Cross multiply
    274,011.40x = 411,060.30 × 87,041.80
  4. Step 4: Simplify right side
    274,011.40x = 35,779,428,420.54
  5. Step 5: Solve for x
    x = 35,779,428,420.54/274,011.40
  6. Step 6: Final answer
    x = 130,576.42

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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.