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Finding the Fourth Proportional to 401,535.36, 554,101.20 and 240,480

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Solution

The fourth proportional to 401,535.36, 554,101.20 and 240,480 is: 331,851.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,535.36 : 554,101.20 = 240,480 : x
  2. Step 2: Convert to fraction form
    401,535.36/554,101.20 = 240,480/x
  3. Step 3: Cross multiply
    401,535.36x = 554,101.20 × 240,480
  4. Step 4: Simplify right side
    401,535.36x = 133,250,256,576.00
  5. Step 5: Solve for x
    x = 133,250,256,576.00/401,535.36
  6. Step 6: Final answer
    x = 331,851.86

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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.