Home / 381,975.65-527,124.64-209,904.31

Finding the Fourth Proportional to 381,975.65, 527,124.64 and 209,904.31

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Solution

The fourth proportional to 381,975.65, 527,124.64 and 209,904.31 is: 289,666.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,975.65 : 527,124.64 = 209,904.31 : x
  2. Step 2: Convert to fraction form
    381,975.65/527,124.64 = 209,904.31/x
  3. Step 3: Cross multiply
    381,975.65x = 527,124.64 × 209,904.31
  4. Step 4: Simplify right side
    381,975.65x = 110,645,733,780.56
  5. Step 5: Solve for x
    x = 110,645,733,780.56/381,975.65
  6. Step 6: Final answer
    x = 289,666.98

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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.