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Finding the Fourth Proportional to 201,605.40, 302,408.10 and 142,556.40

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Solution

The fourth proportional to 201,605.40, 302,408.10 and 142,556.40 is: 213,834.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,605.40 : 302,408.10 = 142,556.40 : x
  2. Step 2: Convert to fraction form
    201,605.40/302,408.10 = 142,556.40/x
  3. Step 3: Cross multiply
    201,605.40x = 302,408.10 × 142,556.40
  4. Step 4: Simplify right side
    201,605.40x = 43,110,210,066.84
  5. Step 5: Solve for x
    x = 43,110,210,066.84/201,605.40
  6. Step 6: Final answer
    x = 213,834.60

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1.5x scale

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.