Home / 385,813.48-578,886.20-208,285.24

Finding the Fourth Proportional to 385,813.48, 578,886.20 and 208,285.24

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Solution

The fourth proportional to 385,813.48, 578,886.20 and 208,285.24 is: 312,517.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,813.48 : 578,886.20 = 208,285.24 : x
  2. Step 2: Convert to fraction form
    385,813.48/578,886.20 = 208,285.24/x
  3. Step 3: Cross multiply
    385,813.48x = 578,886.20 × 208,285.24
  4. Step 4: Simplify right side
    385,813.48x = 120,573,451,099.69
  5. Step 5: Solve for x
    x = 120,573,451,099.69/385,813.48
  6. Step 6: Final answer
    x = 312,517.47

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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.