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Finding the Fourth Proportional to 201,341.80, 302,012.70 and 61,107.40

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Solution

The fourth proportional to 201,341.80, 302,012.70 and 61,107.40 is: 91,661.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,341.80 : 302,012.70 = 61,107.40 : x
  2. Step 2: Convert to fraction form
    201,341.80/302,012.70 = 61,107.40/x
  3. Step 3: Cross multiply
    201,341.80x = 302,012.70 × 61,107.40
  4. Step 4: Simplify right side
    201,341.80x = 18,455,210,863.98
  5. Step 5: Solve for x
    x = 18,455,210,863.98/201,341.80
  6. Step 6: Final answer
    x = 91,661.10

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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.