Home / 385,835.04-578,719.20-119,589.60

Finding the Fourth Proportional to 385,835.04, 578,719.20 and 119,589.60

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Solution

The fourth proportional to 385,835.04, 578,719.20 and 119,589.60 is: 179,374.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,835.04 : 578,719.20 = 119,589.60 : x
  2. Step 2: Convert to fraction form
    385,835.04/578,719.20 = 119,589.60/x
  3. Step 3: Cross multiply
    385,835.04x = 578,719.20 × 119,589.60
  4. Step 4: Simplify right side
    385,835.04x = 69,208,797,640.32
  5. Step 5: Solve for x
    x = 69,208,797,640.32/385,835.04
  6. Step 6: Final answer
    x = 179,374.06

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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.