Home / 385,514.90-578,315.55-119,273.30

Finding the Fourth Proportional to 385,514.90, 578,315.55 and 119,273.30

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Solution

The fourth proportional to 385,514.90, 578,315.55 and 119,273.30 is: 178,923.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,514.90 : 578,315.55 = 119,273.30 : x
  2. Step 2: Convert to fraction form
    385,514.90/578,315.55 = 119,273.30/x
  3. Step 3: Cross multiply
    385,514.90x = 578,315.55 × 119,273.30
  4. Step 4: Simplify right side
    385,514.90x = 68,977,604,089.82
  5. Step 5: Solve for x
    x = 68,977,604,089.82/385,514.90
  6. Step 6: Final answer
    x = 178,923.32

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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.