Home / 385,982.46-578,955.87-105,498.90

Finding the Fourth Proportional to 385,982.46, 578,955.87 and 105,498.90

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Solution

The fourth proportional to 385,982.46, 578,955.87 and 105,498.90 is: 158,243.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,982.46 : 578,955.87 = 105,498.90 : x
  2. Step 2: Convert to fraction form
    385,982.46/578,955.87 = 105,498.90/x
  3. Step 3: Cross multiply
    385,982.46x = 578,955.87 × 105,498.90
  4. Step 4: Simplify right side
    385,982.46x = 61,079,207,433.54
  5. Step 5: Solve for x
    x = 61,079,207,433.54/385,982.46
  6. Step 6: Final answer
    x = 158,243.48

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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.