Home / 385,622.20-578,519.70-148,943.80

Finding the Fourth Proportional to 385,622.20, 578,519.70 and 148,943.80

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Solution

The fourth proportional to 385,622.20, 578,519.70 and 148,943.80 is: 223,449.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,622.20 : 578,519.70 = 148,943.80 : x
  2. Step 2: Convert to fraction form
    385,622.20/578,519.70 = 148,943.80/x
  3. Step 3: Cross multiply
    385,622.20x = 578,519.70 × 148,943.80
  4. Step 4: Simplify right side
    385,622.20x = 86,166,922,492.86
  5. Step 5: Solve for x
    x = 86,166,922,492.86/385,622.20
  6. Step 6: Final answer
    x = 223,449.07

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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.