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Finding the Fourth Proportional to 303,903.90, 455,816.16 and 79,281.18

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Solution

The fourth proportional to 303,903.90, 455,816.16 and 79,281.18 is: 118,911.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,903.90 : 455,816.16 = 79,281.18 : x
  2. Step 2: Convert to fraction form
    303,903.90/455,816.16 = 79,281.18/x
  3. Step 3: Cross multiply
    303,903.90x = 455,816.16 × 79,281.18
  4. Step 4: Simplify right side
    303,903.90x = 36,137,643,027.87
  5. Step 5: Solve for x
    x = 36,137,643,027.87/303,903.90
  6. Step 6: Final answer
    x = 118,911.42

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1.5x scale

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.