Home / 280,530.40-387,126.73-158,023.17

Finding the Fourth Proportional to 280,530.40, 387,126.73 and 158,023.17

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Solution

The fourth proportional to 280,530.40, 387,126.73 and 158,023.17 is: 218,069.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,530.40 : 387,126.73 = 158,023.17 : x
  2. Step 2: Convert to fraction form
    280,530.40/387,126.73 = 158,023.17/x
  3. Step 3: Cross multiply
    280,530.40x = 387,126.73 × 158,023.17
  4. Step 4: Simplify right side
    280,530.40x = 61,174,993,066.33
  5. Step 5: Solve for x
    x = 61,174,993,066.33/280,530.40
  6. Step 6: Final answer
    x = 218,069.03

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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.