Home / 388,291.12-536,007.08-261,040.52

Finding the Fourth Proportional to 388,291.12, 536,007.08 and 261,040.52

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Solution

The fourth proportional to 388,291.12, 536,007.08 and 261,040.52 is: 360,347.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,291.12 : 536,007.08 = 261,040.52 : x
  2. Step 2: Convert to fraction form
    388,291.12/536,007.08 = 261,040.52/x
  3. Step 3: Cross multiply
    388,291.12x = 536,007.08 × 261,040.52
  4. Step 4: Simplify right side
    388,291.12x = 139,919,568,879.50
  5. Step 5: Solve for x
    x = 139,919,568,879.50/388,291.12
  6. Step 6: Final answer
    x = 360,347.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.