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Finding the Fourth Proportional to 354,392.42, 489,073.34 and 193,256.31

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Solution

The fourth proportional to 354,392.42, 489,073.34 and 193,256.31 is: 266,700.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,392.42 : 489,073.34 = 193,256.31 : x
  2. Step 2: Convert to fraction form
    354,392.42/489,073.34 = 193,256.31/x
  3. Step 3: Cross multiply
    354,392.42x = 489,073.34 × 193,256.31
  4. Step 4: Simplify right side
    354,392.42x = 94,516,507,198.38
  5. Step 5: Solve for x
    x = 94,516,507,198.38/354,392.42
  6. Step 6: Final answer
    x = 266,700.14

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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.