Home / 400,942.53-553,090.75-247,931.91

Finding the Fourth Proportional to 400,942.53, 553,090.75 and 247,931.91

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Solution

The fourth proportional to 400,942.53, 553,090.75 and 247,931.91 is: 342,016.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,942.53 : 553,090.75 = 247,931.91 : x
  2. Step 2: Convert to fraction form
    400,942.53/553,090.75 = 247,931.91/x
  3. Step 3: Cross multiply
    400,942.53x = 553,090.75 × 247,931.91
  4. Step 4: Simplify right side
    400,942.53x = 137,128,845,431.00
  5. Step 5: Solve for x
    x = 137,128,845,431.00/400,942.53
  6. Step 6: Final answer
    x = 342,016.21

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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.