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Finding the Fourth Proportional to 423,283.44, 583,172.42 and 403,105.28

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Solution

The fourth proportional to 423,283.44, 583,172.42 and 403,105.28 is: 555,372.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,283.44 : 583,172.42 = 403,105.28 : x
  2. Step 2: Convert to fraction form
    423,283.44/583,172.42 = 403,105.28/x
  3. Step 3: Cross multiply
    423,283.44x = 583,172.42 × 403,105.28
  4. Step 4: Simplify right side
    423,283.44x = 235,079,884,118.07
  5. Step 5: Solve for x
    x = 235,079,884,118.07/423,283.44
  6. Step 6: Final answer
    x = 555,372.27

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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.