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Finding the Fourth Proportional to 255,612.10, 383,418.15 and 161,133.70

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Solution

The fourth proportional to 255,612.10, 383,418.15 and 161,133.70 is: 241,700.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,612.10 : 383,418.15 = 161,133.70 : x
  2. Step 2: Convert to fraction form
    255,612.10/383,418.15 = 161,133.70/x
  3. Step 3: Cross multiply
    255,612.10x = 383,418.15 × 161,133.70
  4. Step 4: Simplify right side
    255,612.10x = 61,781,585,156.66
  5. Step 5: Solve for x
    x = 61,781,585,156.66/255,612.10
  6. Step 6: Final answer
    x = 241,700.55

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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.