Home / 400,810.34-553,218.09-231,146.66

Finding the Fourth Proportional to 400,810.34, 553,218.09 and 231,146.66

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Solution

The fourth proportional to 400,810.34, 553,218.09 and 231,146.66 is: 319,039.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,810.34 : 553,218.09 = 231,146.66 : x
  2. Step 2: Convert to fraction form
    400,810.34/553,218.09 = 231,146.66/x
  3. Step 3: Cross multiply
    400,810.34x = 553,218.09 × 231,146.66
  4. Step 4: Simplify right side
    400,810.34x = 127,874,513,755.08
  5. Step 5: Solve for x
    x = 127,874,513,755.08/400,810.34
  6. Step 6: Final answer
    x = 319,039.96

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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.