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Finding the Fourth Proportional to 381,407.04, 526,325.76 and 211,631.04

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Solution

The fourth proportional to 381,407.04, 526,325.76 and 211,631.04 is: 292,041.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,407.04 : 526,325.76 = 211,631.04 : x
  2. Step 2: Convert to fraction form
    381,407.04/526,325.76 = 211,631.04/x
  3. Step 3: Cross multiply
    381,407.04x = 526,325.76 × 211,631.04
  4. Step 4: Simplify right side
    381,407.04x = 111,386,867,967.59
  5. Step 5: Solve for x
    x = 111,386,867,967.59/381,407.04
  6. Step 6: Final answer
    x = 292,041.98

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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.