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Finding the Fourth Proportional to 225,312.76, 310,936.08 and 139,284.28

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Solution

The fourth proportional to 225,312.76, 310,936.08 and 139,284.28 is: 192,215.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,312.76 : 310,936.08 = 139,284.28 : x
  2. Step 2: Convert to fraction form
    225,312.76/310,936.08 = 139,284.28/x
  3. Step 3: Cross multiply
    225,312.76x = 310,936.08 × 139,284.28
  4. Step 4: Simplify right side
    225,312.76x = 43,308,508,028.82
  5. Step 5: Solve for x
    x = 43,308,508,028.82/225,312.76
  6. Step 6: Final answer
    x = 192,215.07

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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.