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Finding the Fourth Proportional to 443,491.20, 612,004.80 and 242,287.20

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Solution

The fourth proportional to 443,491.20, 612,004.80 and 242,287.20 is: 334,349.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,491.20 : 612,004.80 = 242,287.20 : x
  2. Step 2: Convert to fraction form
    443,491.20/612,004.80 = 242,287.20/x
  3. Step 3: Cross multiply
    443,491.20x = 612,004.80 × 242,287.20
  4. Step 4: Simplify right side
    443,491.20x = 148,280,929,378.56
  5. Step 5: Solve for x
    x = 148,280,929,378.56/443,491.20
  6. Step 6: Final answer
    x = 334,349.20

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1.5x scale

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.