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Finding the Fourth Proportional to 381,391.10, 526,284.88 and 226,315.65

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Solution

The fourth proportional to 381,391.10, 526,284.88 and 226,315.65 is: 312,294.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,391.10 : 526,284.88 = 226,315.65 : x
  2. Step 2: Convert to fraction form
    381,391.10/526,284.88 = 226,315.65/x
  3. Step 3: Cross multiply
    381,391.10x = 526,284.88 × 226,315.65
  4. Step 4: Simplify right side
    381,391.10x = 119,106,506,110.15
  5. Step 5: Solve for x
    x = 119,106,506,110.15/381,391.10
  6. Step 6: Final answer
    x = 312,294.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.