Home / 400,809.84-553,217.40-231,146.16

Finding the Fourth Proportional to 400,809.84, 553,217.40 and 231,146.16

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Solution

The fourth proportional to 400,809.84, 553,217.40 and 231,146.16 is: 319,039.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,809.84 : 553,217.40 = 231,146.16 : x
  2. Step 2: Convert to fraction form
    400,809.84/553,217.40 = 231,146.16/x
  3. Step 3: Cross multiply
    400,809.84x = 553,217.40 × 231,146.16
  4. Step 4: Simplify right side
    400,809.84x = 127,874,077,655.18
  5. Step 5: Solve for x
    x = 127,874,077,655.18/400,809.84
  6. Step 6: Final answer
    x = 319,039.27

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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.