Home / 278,900.10-384,885.12-151,575.70

Finding the Fourth Proportional to 278,900.10, 384,885.12 and 151,575.70

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Solution

The fourth proportional to 278,900.10, 384,885.12 and 151,575.70 is: 209,176.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,900.10 : 384,885.12 = 151,575.70 : x
  2. Step 2: Convert to fraction form
    278,900.10/384,885.12 = 151,575.70/x
  3. Step 3: Cross multiply
    278,900.10x = 384,885.12 × 151,575.70
  4. Step 4: Simplify right side
    278,900.10x = 58,339,231,483.58
  5. Step 5: Solve for x
    x = 58,339,231,483.58/278,900.10
  6. Step 6: Final answer
    x = 209,176.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.