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Finding the Fourth Proportional to 220,258.64, 303,931.10 and 129,594.64

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Solution

The fourth proportional to 220,258.64, 303,931.10 and 129,594.64 is: 178,825.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,258.64 : 303,931.10 = 129,594.64 : x
  2. Step 2: Convert to fraction form
    220,258.64/303,931.10 = 129,594.64/x
  3. Step 3: Cross multiply
    220,258.64x = 303,931.10 × 129,594.64
  4. Step 4: Simplify right side
    220,258.64x = 39,387,841,489.30
  5. Step 5: Solve for x
    x = 39,387,841,489.30/220,258.64
  6. Step 6: Final answer
    x = 178,825.41

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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.