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Finding the Fourth Proportional to 215,210.60, 322,815.90 and 144,708.20

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Solution

The fourth proportional to 215,210.60, 322,815.90 and 144,708.20 is: 217,062.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,210.60 : 322,815.90 = 144,708.20 : x
  2. Step 2: Convert to fraction form
    215,210.60/322,815.90 = 144,708.20/x
  3. Step 3: Cross multiply
    215,210.60x = 322,815.90 × 144,708.20
  4. Step 4: Simplify right side
    215,210.60x = 46,714,107,820.38
  5. Step 5: Solve for x
    x = 46,714,107,820.38/215,210.60
  6. Step 6: Final answer
    x = 217,062.30

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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.