Home / 385,962.40-578,943.60-136,669.60

Finding the Fourth Proportional to 385,962.40, 578,943.60 and 136,669.60

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Solution

The fourth proportional to 385,962.40, 578,943.60 and 136,669.60 is: 205,004.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,962.40 : 578,943.60 = 136,669.60 : x
  2. Step 2: Convert to fraction form
    385,962.40/578,943.60 = 136,669.60/x
  3. Step 3: Cross multiply
    385,962.40x = 578,943.60 × 136,669.60
  4. Step 4: Simplify right side
    385,962.40x = 79,123,990,234.56
  5. Step 5: Solve for x
    x = 79,123,990,234.56/385,962.40
  6. Step 6: Final answer
    x = 205,004.40

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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.