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Finding the Fourth Proportional to 303,342.40, 455,013.60 and 154,043.20

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Solution

The fourth proportional to 303,342.40, 455,013.60 and 154,043.20 is: 231,064.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,342.40 : 455,013.60 = 154,043.20 : x
  2. Step 2: Convert to fraction form
    303,342.40/455,013.60 = 154,043.20/x
  3. Step 3: Cross multiply
    303,342.40x = 455,013.60 × 154,043.20
  4. Step 4: Simplify right side
    303,342.40x = 70,091,750,987.52
  5. Step 5: Solve for x
    x = 70,091,750,987.52/303,342.40
  6. Step 6: Final answer
    x = 231,064.80

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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.