Home / 218,208.28-301,100.98-121,389.26

Finding the Fourth Proportional to 218,208.28, 301,100.98 and 121,389.26

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Solution

The fourth proportional to 218,208.28, 301,100.98 and 121,389.26 is: 167,502.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,208.28 : 301,100.98 = 121,389.26 : x
  2. Step 2: Convert to fraction form
    218,208.28/301,100.98 = 121,389.26/x
  3. Step 3: Cross multiply
    218,208.28x = 301,100.98 × 121,389.26
  4. Step 4: Simplify right side
    218,208.28x = 36,550,425,147.47
  5. Step 5: Solve for x
    x = 36,550,425,147.47/218,208.28
  6. Step 6: Final answer
    x = 167,502.47

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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.