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Finding the Fourth Proportional to 324,019.40, 486,029.10 and 312,209.60

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Solution

The fourth proportional to 324,019.40, 486,029.10 and 312,209.60 is: 468,314.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,019.40 : 486,029.10 = 312,209.60 : x
  2. Step 2: Convert to fraction form
    324,019.40/486,029.10 = 312,209.60/x
  3. Step 3: Cross multiply
    324,019.40x = 486,029.10 × 312,209.60
  4. Step 4: Simplify right side
    324,019.40x = 151,742,950,899.36
  5. Step 5: Solve for x
    x = 151,742,950,899.36/324,019.40
  6. Step 6: Final answer
    x = 468,314.40

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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.