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Finding the Fourth Proportional to 402,125.40, 603,528.30 and 165,637.80

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Solution

The fourth proportional to 402,125.40, 603,528.30 and 165,637.80 is: 248,596.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,125.40 : 603,528.30 = 165,637.80 : x
  2. Step 2: Convert to fraction form
    402,125.40/603,528.30 = 165,637.80/x
  3. Step 3: Cross multiply
    402,125.40x = 603,528.30 × 165,637.80
  4. Step 4: Simplify right side
    402,125.40x = 99,967,099,849.74
  5. Step 5: Solve for x
    x = 99,967,099,849.74/402,125.40
  6. Step 6: Final answer
    x = 248,596.83

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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.