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Finding the Fourth Proportional to 318,897, 440,077.86 and 175,656.60

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Solution

The fourth proportional to 318,897, 440,077.86 and 175,656.60 is: 242,406.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,897 : 440,077.86 = 175,656.60 : x
  2. Step 2: Convert to fraction form
    318,897/440,077.86 = 175,656.60/x
  3. Step 3: Cross multiply
    318,897x = 440,077.86 × 175,656.60
  4. Step 4: Simplify right side
    318,897x = 77,302,580,622.88
  5. Step 5: Solve for x
    x = 77,302,580,622.88/318,897
  6. Step 6: Final answer
    x = 242,406.11

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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.