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Finding the Fourth Proportional to 498,647.81, 747,971.72 and 124,670.81

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Solution

The fourth proportional to 498,647.81, 747,971.72 and 124,670.81 is: 187,006.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,647.81 : 747,971.72 = 124,670.81 : x
  2. Step 2: Convert to fraction form
    498,647.81/747,971.72 = 124,670.81/x
  3. Step 3: Cross multiply
    498,647.81x = 747,971.72 × 124,670.81
  4. Step 4: Simplify right side
    498,647.81x = 93,250,241,903.58
  5. Step 5: Solve for x
    x = 93,250,241,903.58/498,647.81
  6. Step 6: Final answer
    x = 187,006.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.