Home / 258,678.84-356,981.58-143,967

Finding the Fourth Proportional to 258,678.84, 356,981.58 and 143,967

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Solution

The fourth proportional to 258,678.84, 356,981.58 and 143,967 is: 198,677.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,678.84 : 356,981.58 = 143,967 : x
  2. Step 2: Convert to fraction form
    258,678.84/356,981.58 = 143,967/x
  3. Step 3: Cross multiply
    258,678.84x = 356,981.58 × 143,967
  4. Step 4: Simplify right side
    258,678.84x = 51,393,567,127.86
  5. Step 5: Solve for x
    x = 51,393,567,127.86/258,678.84
  6. Step 6: Final answer
    x = 198,677.12

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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.