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Finding the Fourth Proportional to 259,666.16, 389,515.64 and 109,886.73

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Solution

The fourth proportional to 259,666.16, 389,515.64 and 109,886.73 is: 164,837.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,666.16 : 389,515.64 = 109,886.73 : x
  2. Step 2: Convert to fraction form
    259,666.16/389,515.64 = 109,886.73/x
  3. Step 3: Cross multiply
    259,666.16x = 389,515.64 × 109,886.73
  4. Step 4: Simplify right side
    259,666.16x = 42,802,597,953.34
  5. Step 5: Solve for x
    x = 42,802,597,953.34/259,666.16
  6. Step 6: Final answer
    x = 164,837.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.