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Finding the Fourth Proportional to 324,485.20, 486,727.80 and 235,320.40

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Solution

The fourth proportional to 324,485.20, 486,727.80 and 235,320.40 is: 352,980.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,485.20 : 486,727.80 = 235,320.40 : x
  2. Step 2: Convert to fraction form
    324,485.20/486,727.80 = 235,320.40/x
  3. Step 3: Cross multiply
    324,485.20x = 486,727.80 × 235,320.40
  4. Step 4: Simplify right side
    324,485.20x = 114,536,980,587.12
  5. Step 5: Solve for x
    x = 114,536,980,587.12/324,485.20
  6. Step 6: Final answer
    x = 352,980.60

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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.