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Finding the Fourth Proportional to 308,392.74, 425,453.02 and 240,291.46

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Solution

The fourth proportional to 308,392.74, 425,453.02 and 240,291.46 is: 331,501.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,392.74 : 425,453.02 = 240,291.46 : x
  2. Step 2: Convert to fraction form
    308,392.74/425,453.02 = 240,291.46/x
  3. Step 3: Cross multiply
    308,392.74x = 425,453.02 × 240,291.46
  4. Step 4: Simplify right side
    308,392.74x = 102,232,727,606.21
  5. Step 5: Solve for x
    x = 102,232,727,606.21/308,392.74
  6. Step 6: Final answer
    x = 331,501.73

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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.