Home / 385,629.60-578,444.40-227,776.80

Finding the Fourth Proportional to 385,629.60, 578,444.40 and 227,776.80

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Solution

The fourth proportional to 385,629.60, 578,444.40 and 227,776.80 is: 341,665.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,629.60 : 578,444.40 = 227,776.80 : x
  2. Step 2: Convert to fraction form
    385,629.60/578,444.40 = 227,776.80/x
  3. Step 3: Cross multiply
    385,629.60x = 578,444.40 × 227,776.80
  4. Step 4: Simplify right side
    385,629.60x = 131,756,214,409.92
  5. Step 5: Solve for x
    x = 131,756,214,409.92/385,629.60
  6. Step 6: Final answer
    x = 341,665.20

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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.