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Finding the Fourth Proportional to 258,203.88, 356,313.64 and 143,482.17

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Solution

The fourth proportional to 258,203.88, 356,313.64 and 143,482.17 is: 198,001.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,203.88 : 356,313.64 = 143,482.17 : x
  2. Step 2: Convert to fraction form
    258,203.88/356,313.64 = 143,482.17/x
  3. Step 3: Cross multiply
    258,203.88x = 356,313.64 × 143,482.17
  4. Step 4: Simplify right side
    258,203.88x = 51,124,654,267.80
  5. Step 5: Solve for x
    x = 51,124,654,267.80/258,203.88
  6. Step 6: Final answer
    x = 198,001.11

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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.