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Finding the Fourth Proportional to 218,210.56, 299,825.60 and 173,420.80

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Solution

The fourth proportional to 218,210.56, 299,825.60 and 173,420.80 is: 238,283.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,210.56 : 299,825.60 = 173,420.80 : x
  2. Step 2: Convert to fraction form
    218,210.56/299,825.60 = 173,420.80/x
  3. Step 3: Cross multiply
    218,210.56x = 299,825.60 × 173,420.80
  4. Step 4: Simplify right side
    218,210.56x = 51,995,995,412.48
  5. Step 5: Solve for x
    x = 51,995,995,412.48/218,210.56
  6. Step 6: Final answer
    x = 238,283.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.