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Finding the Fourth Proportional to 490,626.40, 735,939.60 and 153,695.20

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Solution

The fourth proportional to 490,626.40, 735,939.60 and 153,695.20 is: 230,542.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,626.40 : 735,939.60 = 153,695.20 : x
  2. Step 2: Convert to fraction form
    490,626.40/735,939.60 = 153,695.20/x
  3. Step 3: Cross multiply
    490,626.40x = 735,939.60 × 153,695.20
  4. Step 4: Simplify right side
    490,626.40x = 113,110,384,009.92
  5. Step 5: Solve for x
    x = 113,110,384,009.92/490,626.40
  6. Step 6: Final answer
    x = 230,542.80

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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.