Home / 312,823.10-469,234.65-155,359.10

Finding the Fourth Proportional to 312,823.10, 469,234.65 and 155,359.10

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Solution

The fourth proportional to 312,823.10, 469,234.65 and 155,359.10 is: 233,038.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,823.10 : 469,234.65 = 155,359.10 : x
  2. Step 2: Convert to fraction form
    312,823.10/469,234.65 = 155,359.10/x
  3. Step 3: Cross multiply
    312,823.10x = 469,234.65 × 155,359.10
  4. Step 4: Simplify right side
    312,823.10x = 72,899,872,912.82
  5. Step 5: Solve for x
    x = 72,899,872,912.82/312,823.10
  6. Step 6: Final answer
    x = 233,038.65

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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.