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Finding the Fourth Proportional to 216,875.58, 299,288.25 and 121,382.28

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Solution

The fourth proportional to 216,875.58, 299,288.25 and 121,382.28 is: 167,507.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,875.58 : 299,288.25 = 121,382.28 : x
  2. Step 2: Convert to fraction form
    216,875.58/299,288.25 = 121,382.28/x
  3. Step 3: Cross multiply
    216,875.58x = 299,288.25 × 121,382.28
  4. Step 4: Simplify right side
    216,875.58x = 36,328,290,162.21
  5. Step 5: Solve for x
    x = 36,328,290,162.21/216,875.58
  6. Step 6: Final answer
    x = 167,507.52

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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.