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Finding the Fourth Proportional to 303,522.58, 455,283.63 and 78,864.18

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Solution

The fourth proportional to 303,522.58, 455,283.63 and 78,864.18 is: 118,296.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,522.58 : 455,283.63 = 78,864.18 : x
  2. Step 2: Convert to fraction form
    303,522.58/455,283.63 = 78,864.18/x
  3. Step 3: Cross multiply
    303,522.58x = 455,283.63 × 78,864.18
  4. Step 4: Simplify right side
    303,522.58x = 35,905,570,147.37
  5. Step 5: Solve for x
    x = 35,905,570,147.37/303,522.58
  6. Step 6: Final answer
    x = 118,296.21

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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.