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Finding the Fourth Proportional to 354,137.65, 488,695.67 and 192,989.23

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Solution

The fourth proportional to 354,137.65, 488,695.67 and 192,989.23 is: 266,317.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,137.65 : 488,695.67 = 192,989.23 : x
  2. Step 2: Convert to fraction form
    354,137.65/488,695.67 = 192,989.23/x
  3. Step 3: Cross multiply
    354,137.65x = 488,695.67 × 192,989.23
  4. Step 4: Simplify right side
    354,137.65x = 94,312,998,870.95
  5. Step 5: Solve for x
    x = 94,312,998,870.95/354,137.65
  6. Step 6: Final answer
    x = 266,317.35

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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.