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Finding the Fourth Proportional to 324,019.80, 486,029.70 and 243,538.20

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Solution

The fourth proportional to 324,019.80, 486,029.70 and 243,538.20 is: 365,307.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,019.80 : 486,029.70 = 243,538.20 : x
  2. Step 2: Convert to fraction form
    324,019.80/486,029.70 = 243,538.20/x
  3. Step 3: Cross multiply
    324,019.80x = 486,029.70 × 243,538.20
  4. Step 4: Simplify right side
    324,019.80x = 118,366,798,284.54
  5. Step 5: Solve for x
    x = 118,366,798,284.54/324,019.80
  6. Step 6: Final answer
    x = 365,307.30

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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.