Home / 385,289.54-578,050.68-115,426.46

Finding the Fourth Proportional to 385,289.54, 578,050.68 and 115,426.46

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Solution

The fourth proportional to 385,289.54, 578,050.68 and 115,426.46 is: 173,174.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,289.54 : 578,050.68 = 115,426.46 : x
  2. Step 2: Convert to fraction form
    385,289.54/578,050.68 = 115,426.46/x
  3. Step 3: Cross multiply
    385,289.54x = 578,050.68 × 115,426.46
  4. Step 4: Simplify right side
    385,289.54x = 66,722,343,692.99
  5. Step 5: Solve for x
    x = 66,722,343,692.99/385,289.54
  6. Step 6: Final answer
    x = 173,174.55

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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.