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Finding the Fourth Proportional to 215,269.80, 322,904.70 and 189,004.20

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Solution

The fourth proportional to 215,269.80, 322,904.70 and 189,004.20 is: 283,506.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,269.80 : 322,904.70 = 189,004.20 : x
  2. Step 2: Convert to fraction form
    215,269.80/322,904.70 = 189,004.20/x
  3. Step 3: Cross multiply
    215,269.80x = 322,904.70 × 189,004.20
  4. Step 4: Simplify right side
    215,269.80x = 61,030,344,499.74
  5. Step 5: Solve for x
    x = 61,030,344,499.74/215,269.80
  6. Step 6: Final answer
    x = 283,506.30

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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.