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Finding the Fourth Proportional to 370,408.20, 555,612.30 and 256,246.80

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Solution

The fourth proportional to 370,408.20, 555,612.30 and 256,246.80 is: 384,370.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,408.20 : 555,612.30 = 256,246.80 : x
  2. Step 2: Convert to fraction form
    370,408.20/555,612.30 = 256,246.80/x
  3. Step 3: Cross multiply
    370,408.20x = 555,612.30 × 256,246.80
  4. Step 4: Simplify right side
    370,408.20x = 142,373,873,915.64
  5. Step 5: Solve for x
    x = 142,373,873,915.64/370,408.20
  6. Step 6: Final answer
    x = 384,370.20

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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.