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Finding the Fourth Proportional to 275,570.15, 380,292.71 and 154,714.70

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Solution

The fourth proportional to 275,570.15, 380,292.71 and 154,714.70 is: 213,509.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,570.15 : 380,292.71 = 154,714.70 : x
  2. Step 2: Convert to fraction form
    275,570.15/380,292.71 = 154,714.70/x
  3. Step 3: Cross multiply
    275,570.15x = 380,292.71 × 154,714.70
  4. Step 4: Simplify right side
    275,570.15x = 58,836,872,717.00
  5. Step 5: Solve for x
    x = 58,836,872,717.00/275,570.15
  6. Step 6: Final answer
    x = 213,509.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.