Home / 385,537.45-578,470.20-243,491.80

Finding the Fourth Proportional to 385,537.45, 578,470.20 and 243,491.80

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Solution

The fourth proportional to 385,537.45, 578,470.20 and 243,491.80 is: 365,341.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,537.45 : 578,470.20 = 243,491.80 : x
  2. Step 2: Convert to fraction form
    385,537.45/578,470.20 = 243,491.80/x
  3. Step 3: Cross multiply
    385,537.45x = 578,470.20 × 243,491.80
  4. Step 4: Simplify right side
    385,537.45x = 140,852,750,244.36
  5. Step 5: Solve for x
    x = 140,852,750,244.36/385,537.45
  6. Step 6: Final answer
    x = 365,341.29

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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.