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Finding the Fourth Proportional to 358,788.42, 495,109.67 and 197,640

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Solution

The fourth proportional to 358,788.42, 495,109.67 and 197,640 is: 272,733.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,788.42 : 495,109.67 = 197,640 : x
  2. Step 2: Convert to fraction form
    358,788.42/495,109.67 = 197,640/x
  3. Step 3: Cross multiply
    358,788.42x = 495,109.67 × 197,640
  4. Step 4: Simplify right side
    358,788.42x = 97,853,474,190.60
  5. Step 5: Solve for x
    x = 97,853,474,190.60/358,788.42
  6. Step 6: Final answer
    x = 272,733.09

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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.