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Finding the Fourth Proportional to 303,468.30, 455,202.45 and 78,810.30

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Solution

The fourth proportional to 303,468.30, 455,202.45 and 78,810.30 is: 118,215.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,468.30 : 455,202.45 = 78,810.30 : x
  2. Step 2: Convert to fraction form
    303,468.30/455,202.45 = 78,810.30/x
  3. Step 3: Cross multiply
    303,468.30x = 455,202.45 × 78,810.30
  4. Step 4: Simplify right side
    303,468.30x = 35,874,641,645.24
  5. Step 5: Solve for x
    x = 35,874,641,645.24/303,468.30
  6. Step 6: Final answer
    x = 118,215.45

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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.