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Finding the Fourth Proportional to 215,266.80, 322,900.20 and 189,001.20

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Solution

The fourth proportional to 215,266.80, 322,900.20 and 189,001.20 is: 283,501.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,266.80 : 322,900.20 = 189,001.20 : x
  2. Step 2: Convert to fraction form
    215,266.80/322,900.20 = 189,001.20/x
  3. Step 3: Cross multiply
    215,266.80x = 322,900.20 × 189,001.20
  4. Step 4: Simplify right side
    215,266.80x = 61,028,525,280.24
  5. Step 5: Solve for x
    x = 61,028,525,280.24/215,266.80
  6. Step 6: Final answer
    x = 283,501.80

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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.