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Finding the Fourth Proportional to 516,389.40, 774,195.30 and 216,624.60

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Solution

The fourth proportional to 516,389.40, 774,195.30 and 216,624.60 is: 324,773.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,389.40 : 774,195.30 = 216,624.60 : x
  2. Step 2: Convert to fraction form
    516,389.40/774,195.30 = 216,624.60/x
  3. Step 3: Cross multiply
    516,389.40x = 774,195.30 × 216,624.60
  4. Step 4: Simplify right side
    516,389.40x = 167,709,747,184.38
  5. Step 5: Solve for x
    x = 167,709,747,184.38/516,389.40
  6. Step 6: Final answer
    x = 324,773.80

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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.