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Finding the Fourth Proportional to 328,043.60, 492,065.40 and 299,013.20

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Solution

The fourth proportional to 328,043.60, 492,065.40 and 299,013.20 is: 448,519.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,043.60 : 492,065.40 = 299,013.20 : x
  2. Step 2: Convert to fraction form
    328,043.60/492,065.40 = 299,013.20/x
  3. Step 3: Cross multiply
    328,043.60x = 492,065.40 × 299,013.20
  4. Step 4: Simplify right side
    328,043.60x = 147,134,049,863.28
  5. Step 5: Solve for x
    x = 147,134,049,863.28/328,043.60
  6. Step 6: Final answer
    x = 448,519.80

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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.