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Finding the Fourth Proportional to 351,590.83, 527,173.62 and 138,103.18

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Solution

The fourth proportional to 351,590.83, 527,173.62 and 138,103.18 is: 207,071.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,590.83 : 527,173.62 = 138,103.18 : x
  2. Step 2: Convert to fraction form
    351,590.83/527,173.62 = 138,103.18/x
  3. Step 3: Cross multiply
    351,590.83x = 527,173.62 × 138,103.18
  4. Step 4: Simplify right side
    351,590.83x = 72,804,353,334.11
  5. Step 5: Solve for x
    x = 72,804,353,334.11/351,590.83
  6. Step 6: Final answer
    x = 207,071.25

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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.