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Finding the Fourth Proportional to 303,317.64, 455,030.46 and 103,660.20

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Solution

The fourth proportional to 303,317.64, 455,030.46 and 103,660.20 is: 155,508.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,317.64 : 455,030.46 = 103,660.20 : x
  2. Step 2: Convert to fraction form
    303,317.64/455,030.46 = 103,660.20/x
  3. Step 3: Cross multiply
    303,317.64x = 455,030.46 × 103,660.20
  4. Step 4: Simplify right side
    303,317.64x = 47,168,548,489.69
  5. Step 5: Solve for x
    x = 47,168,548,489.69/303,317.64
  6. Step 6: Final answer
    x = 155,508.75

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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.