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Finding the Fourth Proportional to 330,026.40, 495,622.80 and 255,328.20

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Solution

The fourth proportional to 330,026.40, 495,622.80 and 255,328.20 is: 383,443.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,026.40 : 495,622.80 = 255,328.20 : x
  2. Step 2: Convert to fraction form
    330,026.40/495,622.80 = 255,328.20/x
  3. Step 3: Cross multiply
    330,026.40x = 495,622.80 × 255,328.20
  4. Step 4: Simplify right side
    330,026.40x = 126,546,477,402.96
  5. Step 5: Solve for x
    x = 126,546,477,402.96/330,026.40
  6. Step 6: Final answer
    x = 383,443.50

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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.