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Finding the Fourth Proportional to 354,331.77, 488,971.26 and 193,188.21

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Solution

The fourth proportional to 354,331.77, 488,971.26 and 193,188.21 is: 266,596.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,331.77 : 488,971.26 = 193,188.21 : x
  2. Step 2: Convert to fraction form
    354,331.77/488,971.26 = 193,188.21/x
  3. Step 3: Cross multiply
    354,331.77x = 488,971.26 × 193,188.21
  4. Step 4: Simplify right side
    354,331.77x = 94,463,482,460.84
  5. Step 5: Solve for x
    x = 94,463,482,460.84/354,331.77
  6. Step 6: Final answer
    x = 266,596.14

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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.