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Finding the Fourth Proportional to 318,094.61, 438,971.45 and 182,130.65

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Solution

The fourth proportional to 318,094.61, 438,971.45 and 182,130.65 is: 251,340.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,094.61 : 438,971.45 = 182,130.65 : x
  2. Step 2: Convert to fraction form
    318,094.61/438,971.45 = 182,130.65/x
  3. Step 3: Cross multiply
    318,094.61x = 438,971.45 × 182,130.65
  4. Step 4: Simplify right side
    318,094.61x = 79,950,152,414.43
  5. Step 5: Solve for x
    x = 79,950,152,414.43/318,094.61
  6. Step 6: Final answer
    x = 251,340.80

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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.