Home / 400,945.40-553,305.11-217,184.34

Finding the Fourth Proportional to 400,945.40, 553,305.11 and 217,184.34

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Solution

The fourth proportional to 400,945.40, 553,305.11 and 217,184.34 is: 299,714.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,945.40 : 553,305.11 = 217,184.34 : x
  2. Step 2: Convert to fraction form
    400,945.40/553,305.11 = 217,184.34/x
  3. Step 3: Cross multiply
    400,945.40x = 553,305.11 × 217,184.34
  4. Step 4: Simplify right side
    400,945.40x = 120,169,207,344.61
  5. Step 5: Solve for x
    x = 120,169,207,344.61/400,945.40
  6. Step 6: Final answer
    x = 299,714.64

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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.