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Finding the Fourth Proportional to 259,700.69, 389,726.00 and 101,910.53

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Solution

The fourth proportional to 259,700.69, 389,726.00 and 101,910.53 is: 152,934.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,700.69 : 389,726.00 = 101,910.53 : x
  2. Step 2: Convert to fraction form
    259,700.69/389,726.00 = 101,910.53/x
  3. Step 3: Cross multiply
    259,700.69x = 389,726.00 × 101,910.53
  4. Step 4: Simplify right side
    259,700.69x = 39,717,184,061.71
  5. Step 5: Solve for x
    x = 39,717,184,061.71/259,700.69
  6. Step 6: Final answer
    x = 152,934.46

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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.