Home / 258,209.14-356,320.86-143,487.40

Finding the Fourth Proportional to 258,209.14, 356,320.86 and 143,487.40

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Solution

The fourth proportional to 258,209.14, 356,320.86 and 143,487.40 is: 198,008.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,209.14 : 356,320.86 = 143,487.40 : x
  2. Step 2: Convert to fraction form
    258,209.14/356,320.86 = 143,487.40/x
  3. Step 3: Cross multiply
    258,209.14x = 356,320.86 × 143,487.40
  4. Step 4: Simplify right side
    258,209.14x = 51,127,553,767.16
  5. Step 5: Solve for x
    x = 51,127,553,767.16/258,209.14
  6. Step 6: Final answer
    x = 198,008.30

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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.