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Finding the Fourth Proportional to 398,783.94, 550,302.42 and 237,635.40

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Solution

The fourth proportional to 398,783.94, 550,302.42 and 237,635.40 is: 327,925.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,783.94 : 550,302.42 = 237,635.40 : x
  2. Step 2: Convert to fraction form
    398,783.94/550,302.42 = 237,635.40/x
  3. Step 3: Cross multiply
    398,783.94x = 550,302.42 × 237,635.40
  4. Step 4: Simplify right side
    398,783.94x = 130,771,335,697.67
  5. Step 5: Solve for x
    x = 130,771,335,697.67/398,783.94
  6. Step 6: Final answer
    x = 327,925.28

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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.