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Finding the Fourth Proportional to 526,029.80, 788,753.10 and 210,129.80

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Solution

The fourth proportional to 526,029.80, 788,753.10 and 210,129.80 is: 315,078.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,029.80 : 788,753.10 = 210,129.80 : x
  2. Step 2: Convert to fraction form
    526,029.80/788,753.10 = 210,129.80/x
  3. Step 3: Cross multiply
    526,029.80x = 788,753.10 × 210,129.80
  4. Step 4: Simplify right side
    526,029.80x = 165,740,531,152.38
  5. Step 5: Solve for x
    x = 165,740,531,152.38/526,029.80
  6. Step 6: Final answer
    x = 315,078.22

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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.