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Finding the Fourth Proportional to 438,919.80, 605,709.32 and 237,715.80

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Solution

The fourth proportional to 438,919.80, 605,709.32 and 237,715.80 is: 328,047.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,919.80 : 605,709.32 = 237,715.80 : x
  2. Step 2: Convert to fraction form
    438,919.80/605,709.32 = 237,715.80/x
  3. Step 3: Cross multiply
    438,919.80x = 605,709.32 × 237,715.80
  4. Step 4: Simplify right side
    438,919.80x = 143,986,674,382.68
  5. Step 5: Solve for x
    x = 143,986,674,382.68/438,919.80
  6. Step 6: Final answer
    x = 328,047.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.