Home / 385,441.39-578,120.54-101,160.44

Finding the Fourth Proportional to 385,441.39, 578,120.54 and 101,160.44

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Solution

The fourth proportional to 385,441.39, 578,120.54 and 101,160.44 is: 151,729.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,441.39 : 578,120.54 = 101,160.44 : x
  2. Step 2: Convert to fraction form
    385,441.39/578,120.54 = 101,160.44/x
  3. Step 3: Cross multiply
    385,441.39x = 578,120.54 × 101,160.44
  4. Step 4: Simplify right side
    385,441.39x = 58,482,926,970.98
  5. Step 5: Solve for x
    x = 58,482,926,970.98/385,441.39
  6. Step 6: Final answer
    x = 151,729.75

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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.