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Finding the Fourth Proportional to 315,008.20, 472,512.30 and 265,800.70

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Solution

The fourth proportional to 315,008.20, 472,512.30 and 265,800.70 is: 398,701.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,008.20 : 472,512.30 = 265,800.70 : x
  2. Step 2: Convert to fraction form
    315,008.20/472,512.30 = 265,800.70/x
  3. Step 3: Cross multiply
    315,008.20x = 472,512.30 × 265,800.70
  4. Step 4: Simplify right side
    315,008.20x = 125,594,100,098.61
  5. Step 5: Solve for x
    x = 125,594,100,098.61/315,008.20
  6. Step 6: Final answer
    x = 398,701.05

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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.