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Finding the Fourth Proportional to 201,520.80, 302,937.30 and 142,763.40

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Solution

The fourth proportional to 201,520.80, 302,937.30 and 142,763.40 is: 214,609.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,520.80 : 302,937.30 = 142,763.40 : x
  2. Step 2: Convert to fraction form
    201,520.80/302,937.30 = 142,763.40/x
  3. Step 3: Cross multiply
    201,520.80x = 302,937.30 × 142,763.40
  4. Step 4: Simplify right side
    201,520.80x = 43,248,358,934.82
  5. Step 5: Solve for x
    x = 43,248,358,934.82/201,520.80
  6. Step 6: Final answer
    x = 214,609.90

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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.