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Finding the Fourth Proportional to 316,454.78, 474,677.60 and 79,795.88

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Solution

The fourth proportional to 316,454.78, 474,677.60 and 79,795.88 is: 119,692.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,454.78 : 474,677.60 = 79,795.88 : x
  2. Step 2: Convert to fraction form
    316,454.78/474,677.60 = 79,795.88/x
  3. Step 3: Cross multiply
    316,454.78x = 474,677.60 × 79,795.88
  4. Step 4: Simplify right side
    316,454.78x = 37,877,316,808.29
  5. Step 5: Solve for x
    x = 37,877,316,808.29/316,454.78
  6. Step 6: Final answer
    x = 119,692.67

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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.