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Finding the Fourth Proportional to 373,639.28, 515,019.72 and 252,736.40

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Solution

The fourth proportional to 373,639.28, 515,019.72 and 252,736.40 is: 348,368.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,639.28 : 515,019.72 = 252,736.40 : x
  2. Step 2: Convert to fraction form
    373,639.28/515,019.72 = 252,736.40/x
  3. Step 3: Cross multiply
    373,639.28x = 515,019.72 × 252,736.40
  4. Step 4: Simplify right side
    373,639.28x = 130,164,229,961.81
  5. Step 5: Solve for x
    x = 130,164,229,961.81/373,639.28
  6. Step 6: Final answer
    x = 348,368.70

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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.