Home / 260,554,105.41-390,843,728.01-85,673,267.66

Finding the Fourth Proportional to 260,554,105.41, 390,843,728.01 and 85,673,267.66

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Solution

The fourth proportional to 260,554,105.41, 390,843,728.01 and 85,673,267.66 is: 128,514,034.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,554,105.41 : 390,843,728.01 = 85,673,267.66 : x
  2. Step 2: Convert to fraction form
    260,554,105.41/390,843,728.01 = 85,673,267.66/x
  3. Step 3: Cross multiply
    260,554,105.41x = 390,843,728.01 × 85,673,267.66
  4. Step 4: Simplify right side
    260,554,105.41x = 33,484,859,321,078,752
  5. Step 5: Solve for x
    x = 33,484,859,321,078,752/260,554,105.41
  6. Step 6: Final answer
    x = 128,514,034.61

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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.