Home / 278,586.72-384,451.68-151,262.40

Finding the Fourth Proportional to 278,586.72, 384,451.68 and 151,262.40

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Solution

The fourth proportional to 278,586.72, 384,451.68 and 151,262.40 is: 208,743.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,586.72 : 384,451.68 = 151,262.40 : x
  2. Step 2: Convert to fraction form
    278,586.72/384,451.68 = 151,262.40/x
  3. Step 3: Cross multiply
    278,586.72x = 384,451.68 × 151,262.40
  4. Step 4: Simplify right side
    278,586.72x = 58,153,083,800.83
  5. Step 5: Solve for x
    x = 58,153,083,800.83/278,586.72
  6. Step 6: Final answer
    x = 208,743.20

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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.