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Finding the Fourth Proportional to 420,556.17, 630,843.11 and 150,701.89

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Solution

The fourth proportional to 420,556.17, 630,843.11 and 150,701.89 is: 226,056.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,556.17 : 630,843.11 = 150,701.89 : x
  2. Step 2: Convert to fraction form
    420,556.17/630,843.11 = 150,701.89/x
  3. Step 3: Cross multiply
    420,556.17x = 630,843.11 × 150,701.89
  4. Step 4: Simplify right side
    420,556.17x = 95,069,248,970.48
  5. Step 5: Solve for x
    x = 95,069,248,970.48/420,556.17
  6. Step 6: Final answer
    x = 226,056.01

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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.