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Finding the Fourth Proportional to 263,717.78, 363,931.66 and 142,859.07

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Solution

The fourth proportional to 263,717.78, 363,931.66 and 142,859.07 is: 197,146.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,717.78 : 363,931.66 = 142,859.07 : x
  2. Step 2: Convert to fraction form
    263,717.78/363,931.66 = 142,859.07/x
  3. Step 3: Cross multiply
    263,717.78x = 363,931.66 × 142,859.07
  4. Step 4: Simplify right side
    263,717.78x = 51,990,938,267.94
  5. Step 5: Solve for x
    x = 51,990,938,267.94/263,717.78
  6. Step 6: Final answer
    x = 197,146.12

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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.