Home / 287,738.91-397,070.55-158,682.81

Finding the Fourth Proportional to 287,738.91, 397,070.55 and 158,682.81

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Solution

The fourth proportional to 287,738.91, 397,070.55 and 158,682.81 is: 218,977.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,738.91 : 397,070.55 = 158,682.81 : x
  2. Step 2: Convert to fraction form
    287,738.91/397,070.55 = 158,682.81/x
  3. Step 3: Cross multiply
    287,738.91x = 397,070.55 × 158,682.81
  4. Step 4: Simplify right side
    287,738.91x = 63,008,270,642.25
  5. Step 5: Solve for x
    x = 63,008,270,642.25/287,738.91
  6. Step 6: Final answer
    x = 218,977.23

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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.