Home / 262,638.10-391,458.77-247,689.94

Finding the Fourth Proportional to 262,638.10, 391,458.77 and 247,689.94

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Solution

The fourth proportional to 262,638.10, 391,458.77 and 247,689.94 is: 369,178.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,638.10 : 391,458.77 = 247,689.94 : x
  2. Step 2: Convert to fraction form
    262,638.10/391,458.77 = 247,689.94/x
  3. Step 3: Cross multiply
    262,638.10x = 391,458.77 × 247,689.94
  4. Step 4: Simplify right side
    262,638.10x = 96,960,399,253.77
  5. Step 5: Solve for x
    x = 96,960,399,253.77/262,638.10
  6. Step 6: Final answer
    x = 369,178.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.