Home / 210,501.12-290,491.20-115,007.80

Finding the Fourth Proportional to 210,501.12, 290,491.20 and 115,007.80

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Solution

The fourth proportional to 210,501.12, 290,491.20 and 115,007.80 is: 158,710.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,501.12 : 290,491.20 = 115,007.80 : x
  2. Step 2: Convert to fraction form
    210,501.12/290,491.20 = 115,007.80/x
  3. Step 3: Cross multiply
    210,501.12x = 290,491.20 × 115,007.80
  4. Step 4: Simplify right side
    210,501.12x = 33,408,753,831.36
  5. Step 5: Solve for x
    x = 33,408,753,831.36/210,501.12
  6. Step 6: Final answer
    x = 158,710.58

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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.