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Finding the Fourth Proportional to 347,491.80, 521,237.70 and 272,842.20

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Solution

The fourth proportional to 347,491.80, 521,237.70 and 272,842.20 is: 409,263.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,491.80 : 521,237.70 = 272,842.20 : x
  2. Step 2: Convert to fraction form
    347,491.80/521,237.70 = 272,842.20/x
  3. Step 3: Cross multiply
    347,491.80x = 521,237.70 × 272,842.20
  4. Step 4: Simplify right side
    347,491.80x = 142,215,640,790.94
  5. Step 5: Solve for x
    x = 142,215,640,790.94/347,491.80
  6. Step 6: Final answer
    x = 409,263.30

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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.