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Finding the Fourth Proportional to 526,888.78, 790,370.16 and 211,345.72

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Solution

The fourth proportional to 526,888.78, 790,370.16 and 211,345.72 is: 317,033.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,888.78 : 790,370.16 = 211,345.72 : x
  2. Step 2: Convert to fraction form
    526,888.78/790,370.16 = 211,345.72/x
  3. Step 3: Cross multiply
    526,888.78x = 790,370.16 × 211,345.72
  4. Step 4: Simplify right side
    526,888.78x = 167,041,350,531.72
  5. Step 5: Solve for x
    x = 167,041,350,531.72/526,888.78
  6. Step 6: Final answer
    x = 317,033.42

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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.