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Finding the Fourth Proportional to 318,881.94, 477,994.77 and 141,472.50

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Solution

The fourth proportional to 318,881.94, 477,994.77 and 141,472.50 is: 212,063.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,881.94 : 477,994.77 = 141,472.50 : x
  2. Step 2: Convert to fraction form
    318,881.94/477,994.77 = 141,472.50/x
  3. Step 3: Cross multiply
    318,881.94x = 477,994.77 × 141,472.50
  4. Step 4: Simplify right side
    318,881.94x = 67,623,115,098.83
  5. Step 5: Solve for x
    x = 67,623,115,098.83/318,881.94
  6. Step 6: Final answer
    x = 212,063.17

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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.