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Finding the Fourth Proportional to 303,132.68, 454,700.53 and 78,477.35

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Solution

The fourth proportional to 303,132.68, 454,700.53 and 78,477.35 is: 117,716.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,132.68 : 454,700.53 = 78,477.35 : x
  2. Step 2: Convert to fraction form
    303,132.68/454,700.53 = 78,477.35/x
  3. Step 3: Cross multiply
    303,132.68x = 454,700.53 × 78,477.35
  4. Step 4: Simplify right side
    303,132.68x = 35,683,692,638.00
  5. Step 5: Solve for x
    x = 35,683,692,638.00/303,132.68
  6. Step 6: Final answer
    x = 117,716.42

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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.