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Finding the Fourth Proportional to 489,545.76, 734,185.12 and 134,475.36

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Solution

The fourth proportional to 489,545.76, 734,185.12 and 134,475.36 is: 201,676.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,545.76 : 734,185.12 = 134,475.36 : x
  2. Step 2: Convert to fraction form
    489,545.76/734,185.12 = 134,475.36/x
  3. Step 3: Cross multiply
    489,545.76x = 734,185.12 × 134,475.36
  4. Step 4: Simplify right side
    489,545.76x = 98,729,808,318.64
  5. Step 5: Solve for x
    x = 98,729,808,318.64/489,545.76
  6. Step 6: Final answer
    x = 201,676.36

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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.