Home / 152,428.20-228,642.30-47,279.40

Finding the Fourth Proportional to 152,428.20, 228,642.30 and 47,279.40

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Solution

The fourth proportional to 152,428.20, 228,642.30 and 47,279.40 is: 70,919.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,428.20 : 228,642.30 = 47,279.40 : x
  2. Step 2: Convert to fraction form
    152,428.20/228,642.30 = 47,279.40/x
  3. Step 3: Cross multiply
    152,428.20x = 228,642.30 × 47,279.40
  4. Step 4: Simplify right side
    152,428.20x = 10,810,070,758.62
  5. Step 5: Solve for x
    x = 10,810,070,758.62/152,428.20
  6. Step 6: Final answer
    x = 70,919.10

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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.