Home / 385,614.96-578,405.40-105,132.24

Finding the Fourth Proportional to 385,614.96, 578,405.40 and 105,132.24

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Solution

The fourth proportional to 385,614.96, 578,405.40 and 105,132.24 is: 157,693.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,614.96 : 578,405.40 = 105,132.24 : x
  2. Step 2: Convert to fraction form
    385,614.96/578,405.40 = 105,132.24/x
  3. Step 3: Cross multiply
    385,614.96x = 578,405.40 × 105,132.24
  4. Step 4: Simplify right side
    385,614.96x = 60,809,055,330.10
  5. Step 5: Solve for x
    x = 60,809,055,330.10/385,614.96
  6. Step 6: Final answer
    x = 157,693.71

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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.