Home / 268,856.63-403,284.95-81,868.13

Finding the Fourth Proportional to 268,856.63, 403,284.95 and 81,868.13

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Solution

The fourth proportional to 268,856.63, 403,284.95 and 81,868.13 is: 122,802.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,856.63 : 403,284.95 = 81,868.13 : x
  2. Step 2: Convert to fraction form
    268,856.63/403,284.95 = 81,868.13/x
  3. Step 3: Cross multiply
    268,856.63x = 403,284.95 × 81,868.13
  4. Step 4: Simplify right side
    268,856.63x = 33,016,184,713.64
  5. Step 5: Solve for x
    x = 33,016,184,713.64/268,856.63
  6. Step 6: Final answer
    x = 122,802.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.