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Finding the Fourth Proportional to 453,171.44, 678,723.12 and 216,681.38

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Solution

The fourth proportional to 453,171.44, 678,723.12 and 216,681.38 is: 324,527.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,171.44 : 678,723.12 = 216,681.38 : x
  2. Step 2: Convert to fraction form
    453,171.44/678,723.12 = 216,681.38/x
  3. Step 3: Cross multiply
    453,171.44x = 678,723.12 × 216,681.38
  4. Step 4: Simplify right side
    453,171.44x = 147,066,662,279.51
  5. Step 5: Solve for x
    x = 147,066,662,279.51/453,171.44
  6. Step 6: Final answer
    x = 324,527.65

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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.