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Finding the Fourth Proportional to 324,089.20, 486,133.80 and 305,718.40

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Solution

The fourth proportional to 324,089.20, 486,133.80 and 305,718.40 is: 458,577.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,089.20 : 486,133.80 = 305,718.40 : x
  2. Step 2: Convert to fraction form
    324,089.20/486,133.80 = 305,718.40/x
  3. Step 3: Cross multiply
    324,089.20x = 486,133.80 × 305,718.40
  4. Step 4: Simplify right side
    324,089.20x = 148,620,047,521.92
  5. Step 5: Solve for x
    x = 148,620,047,521.92/324,089.20
  6. Step 6: Final answer
    x = 458,577.60

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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.