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Finding the Fourth Proportional to 201,721.80, 302,582.70 and 61,487.40

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Solution

The fourth proportional to 201,721.80, 302,582.70 and 61,487.40 is: 92,231.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,721.80 : 302,582.70 = 61,487.40 : x
  2. Step 2: Convert to fraction form
    201,721.80/302,582.70 = 61,487.40/x
  3. Step 3: Cross multiply
    201,721.80x = 302,582.70 × 61,487.40
  4. Step 4: Simplify right side
    201,721.80x = 18,605,023,507.98
  5. Step 5: Solve for x
    x = 18,605,023,507.98/201,721.80
  6. Step 6: Final answer
    x = 92,231.10

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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.