Home / 415,520.06-623,058.30-215,639.18

Finding the Fourth Proportional to 415,520.06, 623,058.30 and 215,639.18

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Solution

The fourth proportional to 415,520.06, 623,058.30 and 215,639.18 is: 323,343.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,520.06 : 623,058.30 = 215,639.18 : x
  2. Step 2: Convert to fraction form
    415,520.06/623,058.30 = 215,639.18/x
  3. Step 3: Cross multiply
    415,520.06x = 623,058.30 × 215,639.18
  4. Step 4: Simplify right side
    415,520.06x = 134,355,780,904.19
  5. Step 5: Solve for x
    x = 134,355,780,904.19/415,520.06
  6. Step 6: Final answer
    x = 323,343.67

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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.