Home / 368,679.11-553,018.38-102,439.50

Finding the Fourth Proportional to 368,679.11, 553,018.38 and 102,439.50

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Solution

The fourth proportional to 368,679.11, 553,018.38 and 102,439.50 is: 153,659.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,679.11 : 553,018.38 = 102,439.50 : x
  2. Step 2: Convert to fraction form
    368,679.11/553,018.38 = 102,439.50/x
  3. Step 3: Cross multiply
    368,679.11x = 553,018.38 × 102,439.50
  4. Step 4: Simplify right side
    368,679.11x = 56,650,926,338.01
  5. Step 5: Solve for x
    x = 56,650,926,338.01/368,679.11
  6. Step 6: Final answer
    x = 153,659.17

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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.