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Finding the Fourth Proportional to 215,567.70, 323,400.15 and 65,814.90

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Solution

The fourth proportional to 215,567.70, 323,400.15 and 65,814.90 is: 98,737.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,567.70 : 323,400.15 = 65,814.90 : x
  2. Step 2: Convert to fraction form
    215,567.70/323,400.15 = 65,814.90/x
  3. Step 3: Cross multiply
    215,567.70x = 323,400.15 × 65,814.90
  4. Step 4: Simplify right side
    215,567.70x = 21,284,548,532.24
  5. Step 5: Solve for x
    x = 21,284,548,532.24/215,567.70
  6. Step 6: Final answer
    x = 98,737.19

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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.