Home / 400,940.28-553,087.64-247,929.66

Finding the Fourth Proportional to 400,940.28, 553,087.64 and 247,929.66

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Solution

The fourth proportional to 400,940.28, 553,087.64 and 247,929.66 is: 342,013.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,940.28 : 553,087.64 = 247,929.66 : x
  2. Step 2: Convert to fraction form
    400,940.28/553,087.64 = 247,929.66/x
  3. Step 3: Cross multiply
    400,940.28x = 553,087.64 × 247,929.66
  4. Step 4: Simplify right side
    400,940.28x = 137,126,831,155.23
  5. Step 5: Solve for x
    x = 137,126,831,155.23/400,940.28
  6. Step 6: Final answer
    x = 342,013.11

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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.