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Finding the Fourth Proportional to 421,376.04, 632,082.51 and 121,886.89

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Solution

The fourth proportional to 421,376.04, 632,082.51 and 121,886.89 is: 182,835.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,376.04 : 632,082.51 = 121,886.89 : x
  2. Step 2: Convert to fraction form
    421,376.04/632,082.51 = 121,886.89/x
  3. Step 3: Cross multiply
    421,376.04x = 632,082.51 × 121,886.89
  4. Step 4: Simplify right side
    421,376.04x = 77,042,569,787.09
  5. Step 5: Solve for x
    x = 77,042,569,787.09/421,376.04
  6. Step 6: Final answer
    x = 182,835.67

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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.