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Finding the Fourth Proportional to 400,676.25, 552,931.21 and 219,384.89

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Solution

The fourth proportional to 400,676.25, 552,931.21 and 219,384.89 is: 302,750.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,676.25 : 552,931.21 = 219,384.89 : x
  2. Step 2: Convert to fraction form
    400,676.25/552,931.21 = 219,384.89/x
  3. Step 3: Cross multiply
    400,676.25x = 552,931.21 × 219,384.89
  4. Step 4: Simplify right side
    400,676.25x = 121,304,752,683.42
  5. Step 5: Solve for x
    x = 121,304,752,683.42/400,676.25
  6. Step 6: Final answer
    x = 302,750.04

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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.