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Finding the Fourth Proportional to 215,312.40, 322,385.40 and 168,656.40

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Solution

The fourth proportional to 215,312.40, 322,385.40 and 168,656.40 is: 252,527.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,312.40 : 322,385.40 = 168,656.40 : x
  2. Step 2: Convert to fraction form
    215,312.40/322,385.40 = 168,656.40/x
  3. Step 3: Cross multiply
    215,312.40x = 322,385.40 × 168,656.40
  4. Step 4: Simplify right side
    215,312.40x = 54,372,360,976.56
  5. Step 5: Solve for x
    x = 54,372,360,976.56/215,312.40
  6. Step 6: Final answer
    x = 252,527.77

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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.