Home / 385,001.27-531,305.06-215,235.39

Finding the Fourth Proportional to 385,001.27, 531,305.06 and 215,235.39

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Solution

The fourth proportional to 385,001.27, 531,305.06 and 215,235.39 is: 297,026.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,001.27 : 531,305.06 = 215,235.39 : x
  2. Step 2: Convert to fraction form
    385,001.27/531,305.06 = 215,235.39/x
  3. Step 3: Cross multiply
    385,001.27x = 531,305.06 × 215,235.39
  4. Step 4: Simplify right side
    385,001.27x = 114,355,650,721.90
  5. Step 5: Solve for x
    x = 114,355,650,721.90/385,001.27
  6. Step 6: Final answer
    x = 297,026.69

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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.