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Finding the Fourth Proportional to 215,852.20, 297,807.78 and 130,964.20

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Solution

The fourth proportional to 215,852.20, 297,807.78 and 130,964.20 is: 180,689.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,852.20 : 297,807.78 = 130,964.20 : x
  2. Step 2: Convert to fraction form
    215,852.20/297,807.78 = 130,964.20/x
  3. Step 3: Cross multiply
    215,852.20x = 297,807.78 × 130,964.20
  4. Step 4: Simplify right side
    215,852.20x = 39,002,157,661.48
  5. Step 5: Solve for x
    x = 39,002,157,661.48/215,852.20
  6. Step 6: Final answer
    x = 180,689.18

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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.