Home / 415,569.87-623,390.18-131,184.34

Finding the Fourth Proportional to 415,569.87, 623,390.18 and 131,184.34

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Solution

The fourth proportional to 415,569.87, 623,390.18 and 131,184.34 is: 196,787.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,569.87 : 623,390.18 = 131,184.34 : x
  2. Step 2: Convert to fraction form
    415,569.87/623,390.18 = 131,184.34/x
  3. Step 3: Cross multiply
    415,569.87x = 623,390.18 × 131,184.34
  4. Step 4: Simplify right side
    415,569.87x = 81,779,027,111.38
  5. Step 5: Solve for x
    x = 81,779,027,111.38/415,569.87
  6. Step 6: Final answer
    x = 196,787.67

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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.