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Finding the Fourth Proportional to 515,365.40, 773,048.10 and 216,183.80

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Solution

The fourth proportional to 515,365.40, 773,048.10 and 216,183.80 is: 324,275.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,365.40 : 773,048.10 = 216,183.80 : x
  2. Step 2: Convert to fraction form
    515,365.40/773,048.10 = 216,183.80/x
  3. Step 3: Cross multiply
    515,365.40x = 773,048.10 × 216,183.80
  4. Step 4: Simplify right side
    515,365.40x = 167,120,475,840.78
  5. Step 5: Solve for x
    x = 167,120,475,840.78/515,365.40
  6. Step 6: Final answer
    x = 324,275.70

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Double scale
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Similar ratio
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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.