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Finding the Fourth Proportional to 258,017.56, 356,116.63 and 149,126.53

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Solution

The fourth proportional to 258,017.56, 356,116.63 and 149,126.53 is: 205,824.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,017.56 : 356,116.63 = 149,126.53 : x
  2. Step 2: Convert to fraction form
    258,017.56/356,116.63 = 149,126.53/x
  3. Step 3: Cross multiply
    258,017.56x = 356,116.63 × 149,126.53
  4. Step 4: Simplify right side
    258,017.56x = 53,106,437,307.19
  5. Step 5: Solve for x
    x = 53,106,437,307.19/258,017.56
  6. Step 6: Final answer
    x = 205,824.90

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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.