Home / 215,434.90-323,200.80-65,690.32

Finding the Fourth Proportional to 215,434.90, 323,200.80 and 65,690.32

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Solution

The fourth proportional to 215,434.90, 323,200.80 and 65,690.32 is: 98,550.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,434.90 : 323,200.80 = 65,690.32 : x
  2. Step 2: Convert to fraction form
    215,434.90/323,200.80 = 65,690.32/x
  3. Step 3: Cross multiply
    215,434.90x = 323,200.80 × 65,690.32
  4. Step 4: Simplify right side
    215,434.90x = 21,231,163,976.26
  5. Step 5: Solve for x
    x = 21,231,163,976.26/215,434.90
  6. Step 6: Final answer
    x = 98,550.25

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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.