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Finding the Fourth Proportional to 443,349.20, 665,023.80 and 256,264.40

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Solution

The fourth proportional to 443,349.20, 665,023.80 and 256,264.40 is: 384,396.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,349.20 : 665,023.80 = 256,264.40 : x
  2. Step 2: Convert to fraction form
    443,349.20/665,023.80 = 256,264.40/x
  3. Step 3: Cross multiply
    443,349.20x = 665,023.80 × 256,264.40
  4. Step 4: Simplify right side
    443,349.20x = 170,421,925,092.72
  5. Step 5: Solve for x
    x = 170,421,925,092.72/443,349.20
  6. Step 6: Final answer
    x = 384,396.60

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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.