Home / 385,581.96-578,355.93-105,099.21

Finding the Fourth Proportional to 385,581.96, 578,355.93 and 105,099.21

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Solution

The fourth proportional to 385,581.96, 578,355.93 and 105,099.21 is: 157,644.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,581.96 : 578,355.93 = 105,099.21 : x
  2. Step 2: Convert to fraction form
    385,581.96/578,355.93 = 105,099.21/x
  3. Step 3: Cross multiply
    385,581.96x = 578,355.93 × 105,099.21
  4. Step 4: Simplify right side
    385,581.96x = 60,784,751,341.82
  5. Step 5: Solve for x
    x = 60,784,751,341.82/385,581.96
  6. Step 6: Final answer
    x = 157,644.18

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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.