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Finding the Fourth Proportional to 420,568.35, 630,696.69 and 150,654.45

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Solution

The fourth proportional to 420,568.35, 630,696.69 and 150,654.45 is: 225,925.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,568.35 : 630,696.69 = 150,654.45 : x
  2. Step 2: Convert to fraction form
    420,568.35/630,696.69 = 150,654.45/x
  3. Step 3: Cross multiply
    420,568.35x = 630,696.69 × 150,654.45
  4. Step 4: Simplify right side
    420,568.35x = 95,017,262,948.77
  5. Step 5: Solve for x
    x = 95,017,262,948.77/420,568.35
  6. Step 6: Final answer
    x = 225,925.85

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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.