Home / 278,913.09-384,900.11-151,588.69

Finding the Fourth Proportional to 278,913.09, 384,900.11 and 151,588.69

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Solution

The fourth proportional to 278,913.09, 384,900.11 and 151,588.69 is: 209,192.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,913.09 : 384,900.11 = 151,588.69 : x
  2. Step 2: Convert to fraction form
    278,913.09/384,900.11 = 151,588.69/x
  3. Step 3: Cross multiply
    278,913.09x = 384,900.11 × 151,588.69
  4. Step 4: Simplify right side
    278,913.09x = 58,346,503,455.76
  5. Step 5: Solve for x
    x = 58,346,503,455.76/278,913.09
  6. Step 6: Final answer
    x = 209,192.42

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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.