Home / 385,533.45-578,464.20-243,487.80

Finding the Fourth Proportional to 385,533.45, 578,464.20 and 243,487.80

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Solution

The fourth proportional to 385,533.45, 578,464.20 and 243,487.80 is: 365,335.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,533.45 : 578,464.20 = 243,487.80 : x
  2. Step 2: Convert to fraction form
    385,533.45/578,464.20 = 243,487.80/x
  3. Step 3: Cross multiply
    385,533.45x = 578,464.20 × 243,487.80
  4. Step 4: Simplify right side
    385,533.45x = 140,848,975,436.76
  5. Step 5: Solve for x
    x = 140,848,975,436.76/385,533.45
  6. Step 6: Final answer
    x = 365,335.29

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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.