Home / 415,811.80-623,732.10-131,505.40

Finding the Fourth Proportional to 415,811.80, 623,732.10 and 131,505.40

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Solution

The fourth proportional to 415,811.80, 623,732.10 and 131,505.40 is: 197,262.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,811.80 : 623,732.10 = 131,505.40 : x
  2. Step 2: Convert to fraction form
    415,811.80/623,732.10 = 131,505.40/x
  3. Step 3: Cross multiply
    415,811.80x = 623,732.10 × 131,505.40
  4. Step 4: Simplify right side
    415,811.80x = 82,024,139,303.34
  5. Step 5: Solve for x
    x = 82,024,139,303.34/415,811.80
  6. Step 6: Final answer
    x = 197,262.65

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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.