Home / 401,018.50-553,405.65-239,880.34

Finding the Fourth Proportional to 401,018.50, 553,405.65 and 239,880.34

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Solution

The fourth proportional to 401,018.50, 553,405.65 and 239,880.34 is: 331,034.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,018.50 : 553,405.65 = 239,880.34 : x
  2. Step 2: Convert to fraction form
    401,018.50/553,405.65 = 239,880.34/x
  3. Step 3: Cross multiply
    401,018.50x = 553,405.65 × 239,880.34
  4. Step 4: Simplify right side
    401,018.50x = 132,751,135,479.92
  5. Step 5: Solve for x
    x = 132,751,135,479.92/401,018.50
  6. Step 6: Final answer
    x = 331,034.94

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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.