Home / 258,727.89-388,064.54-69,207.38

Finding the Fourth Proportional to 258,727.89, 388,064.54 and 69,207.38

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Solution

The fourth proportional to 258,727.89, 388,064.54 and 69,207.38 is: 103,803.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,727.89 : 388,064.54 = 69,207.38 : x
  2. Step 2: Convert to fraction form
    258,727.89/388,064.54 = 69,207.38/x
  3. Step 3: Cross multiply
    258,727.89x = 388,064.54 × 69,207.38
  4. Step 4: Simplify right side
    258,727.89x = 26,856,931,955.11
  5. Step 5: Solve for x
    x = 26,856,931,955.11/258,727.89
  6. Step 6: Final answer
    x = 103,803.77

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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.