Home / 289,986.10-434,979.15-243,330.10

Finding the Fourth Proportional to 289,986.10, 434,979.15 and 243,330.10

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Solution

The fourth proportional to 289,986.10, 434,979.15 and 243,330.10 is: 364,995.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,986.10 : 434,979.15 = 243,330.10 : x
  2. Step 2: Convert to fraction form
    289,986.10/434,979.15 = 243,330.10/x
  3. Step 3: Cross multiply
    289,986.10x = 434,979.15 × 243,330.10
  4. Step 4: Simplify right side
    289,986.10x = 105,843,520,067.42
  5. Step 5: Solve for x
    x = 105,843,520,067.42/289,986.10
  6. Step 6: Final answer
    x = 364,995.15

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Similar ratio
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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.