Home / 260,554,144.54-390,843,785.68-85,673,306.65

Finding the Fourth Proportional to 260,554,144.54, 390,843,785.68 and 85,673,306.65

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Solution

The fourth proportional to 260,554,144.54, 390,843,785.68 and 85,673,306.65 is: 128,514,092.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,554,144.54 : 390,843,785.68 = 85,673,306.65 : x
  2. Step 2: Convert to fraction form
    260,554,144.54/390,843,785.68 = 85,673,306.65/x
  3. Step 3: Cross multiply
    260,554,144.54x = 390,843,785.68 × 85,673,306.65
  4. Step 4: Simplify right side
    260,554,144.54x = 33,484,879,501,618,224
  5. Step 5: Solve for x
    x = 33,484,879,501,618,224/260,554,144.54
  6. Step 6: Final answer
    x = 128,514,092.77

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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.