Home / 377,690.16-521,217-207,935.76

Finding the Fourth Proportional to 377,690.16, 521,217 and 207,935.76

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Solution

The fourth proportional to 377,690.16, 521,217 and 207,935.76 is: 286,953.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,690.16 : 521,217 = 207,935.76 : x
  2. Step 2: Convert to fraction form
    377,690.16/521,217 = 207,935.76/x
  3. Step 3: Cross multiply
    377,690.16x = 521,217 × 207,935.76
  4. Step 4: Simplify right side
    377,690.16x = 108,379,653,019.92
  5. Step 5: Solve for x
    x = 108,379,653,019.92/377,690.16
  6. Step 6: Final answer
    x = 286,953.87

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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.