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Finding the Fourth Proportional to 354,115.55, 488,679.48 and 192,970.55

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Solution

The fourth proportional to 354,115.55, 488,679.48 and 192,970.55 is: 266,299.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,115.55 : 488,679.48 = 192,970.55 : x
  2. Step 2: Convert to fraction form
    354,115.55/488,679.48 = 192,970.55/x
  3. Step 3: Cross multiply
    354,115.55x = 488,679.48 × 192,970.55
  4. Step 4: Simplify right side
    354,115.55x = 94,300,748,029.31
  5. Step 5: Solve for x
    x = 94,300,748,029.31/354,115.55
  6. Step 6: Final answer
    x = 266,299.37

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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.