Home / 429,280.36-643,774.74-148,732.12

Finding the Fourth Proportional to 429,280.36, 643,774.74 and 148,732.12

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Solution

The fourth proportional to 429,280.36, 643,774.74 and 148,732.12 is: 223,047.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,280.36 : 643,774.74 = 148,732.12 : x
  2. Step 2: Convert to fraction form
    429,280.36/643,774.74 = 148,732.12/x
  3. Step 3: Cross multiply
    429,280.36x = 643,774.74 × 148,732.12
  4. Step 4: Simplify right side
    429,280.36x = 95,749,981,882.65
  5. Step 5: Solve for x
    x = 95,749,981,882.65/429,280.36
  6. Step 6: Final answer
    x = 223,047.66

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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.