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Finding the Fourth Proportional to 315,291.66, 435,098.90 and 172,054.14

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Solution

The fourth proportional to 315,291.66, 435,098.90 and 172,054.14 is: 237,432.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,291.66 : 435,098.90 = 172,054.14 : x
  2. Step 2: Convert to fraction form
    315,291.66/435,098.90 = 172,054.14/x
  3. Step 3: Cross multiply
    315,291.66x = 435,098.90 × 172,054.14
  4. Step 4: Simplify right side
    315,291.66x = 74,860,567,054.45
  5. Step 5: Solve for x
    x = 74,860,567,054.45/315,291.66
  6. Step 6: Final answer
    x = 237,432.75

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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.