Home / 385,582.96-578,357.43-105,100.21

Finding the Fourth Proportional to 385,582.96, 578,357.43 and 105,100.21

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Solution

The fourth proportional to 385,582.96, 578,357.43 and 105,100.21 is: 157,645.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,582.96 : 578,357.43 = 105,100.21 : x
  2. Step 2: Convert to fraction form
    385,582.96/578,357.43 = 105,100.21/x
  3. Step 3: Cross multiply
    385,582.96x = 578,357.43 × 105,100.21
  4. Step 4: Simplify right side
    385,582.96x = 60,785,487,348.06
  5. Step 5: Solve for x
    x = 60,785,487,348.06/385,582.96
  6. Step 6: Final answer
    x = 157,645.68

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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.