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Finding the Fourth Proportional to 489,989.13, 735,087.59 and 174,445.13

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Solution

The fourth proportional to 489,989.13, 735,087.59 and 174,445.13 is: 261,704.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,989.13 : 735,087.59 = 174,445.13 : x
  2. Step 2: Convert to fraction form
    489,989.13/735,087.59 = 174,445.13/x
  3. Step 3: Cross multiply
    489,989.13x = 735,087.59 × 174,445.13
  4. Step 4: Simplify right side
    489,989.13x = 128,232,445,651.27
  5. Step 5: Solve for x
    x = 128,232,445,651.27/489,989.13
  6. Step 6: Final answer
    x = 261,704.67

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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.