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Finding the Fourth Proportional to 324,753.80, 487,130.70 and 218,465.60

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Solution

The fourth proportional to 324,753.80, 487,130.70 and 218,465.60 is: 327,698.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,753.80 : 487,130.70 = 218,465.60 : x
  2. Step 2: Convert to fraction form
    324,753.80/487,130.70 = 218,465.60/x
  3. Step 3: Cross multiply
    324,753.80x = 487,130.70 × 218,465.60
  4. Step 4: Simplify right side
    324,753.80x = 106,421,300,653.92
  5. Step 5: Solve for x
    x = 106,421,300,653.92/324,753.80
  6. Step 6: Final answer
    x = 327,698.40

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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.