Home / 215,457.40-322,981.62-75,178.36

Finding the Fourth Proportional to 215,457.40, 322,981.62 and 75,178.36

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Solution

The fourth proportional to 215,457.40, 322,981.62 and 75,178.36 is: 112,696.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,457.40 : 322,981.62 = 75,178.36 : x
  2. Step 2: Convert to fraction form
    215,457.40/322,981.62 = 75,178.36/x
  3. Step 3: Cross multiply
    215,457.40x = 322,981.62 × 75,178.36
  4. Step 4: Simplify right side
    215,457.40x = 24,281,228,501.74
  5. Step 5: Solve for x
    x = 24,281,228,501.74/215,457.40
  6. Step 6: Final answer
    x = 112,696.19

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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.