Home / 228,456.47-315,228.69-131,642.84

Finding the Fourth Proportional to 228,456.47, 315,228.69 and 131,642.84

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Solution

The fourth proportional to 228,456.47, 315,228.69 and 131,642.84 is: 181,643.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,456.47 : 315,228.69 = 131,642.84 : x
  2. Step 2: Convert to fraction form
    228,456.47/315,228.69 = 131,642.84/x
  3. Step 3: Cross multiply
    228,456.47x = 315,228.69 × 131,642.84
  4. Step 4: Simplify right side
    228,456.47x = 41,497,598,424.94
  5. Step 5: Solve for x
    x = 41,497,598,424.94/228,456.47
  6. Step 6: Final answer
    x = 181,643.35

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1.5x scale

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.