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Finding the Fourth Proportional to 374,561.18, 561,897.72 and 137,885.86

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Solution

The fourth proportional to 374,561.18, 561,897.72 and 137,885.86 is: 206,849.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,561.18 : 561,897.72 = 137,885.86 : x
  2. Step 2: Convert to fraction form
    374,561.18/561,897.72 = 137,885.86/x
  3. Step 3: Cross multiply
    374,561.18x = 561,897.72 × 137,885.86
  4. Step 4: Simplify right side
    374,561.18x = 77,477,750,354.24
  5. Step 5: Solve for x
    x = 77,477,750,354.24/374,561.18
  6. Step 6: Final answer
    x = 206,849.39

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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.