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Finding the Fourth Proportional to 304,043.40, 456,023.70 and 79,421.40

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Solution

The fourth proportional to 304,043.40, 456,023.70 and 79,421.40 is: 119,121.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,043.40 : 456,023.70 = 79,421.40 : x
  2. Step 2: Convert to fraction form
    304,043.40/456,023.70 = 79,421.40/x
  3. Step 3: Cross multiply
    304,043.40x = 456,023.70 × 79,421.40
  4. Step 4: Simplify right side
    304,043.40x = 36,218,040,687.18
  5. Step 5: Solve for x
    x = 36,218,040,687.18/304,043.40
  6. Step 6: Final answer
    x = 119,121.29

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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.