Home / 384,784.48-531,001.74-215,018.61

Finding the Fourth Proportional to 384,784.48, 531,001.74 and 215,018.61

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Solution

The fourth proportional to 384,784.48, 531,001.74 and 215,018.61 is: 296,725.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,784.48 : 531,001.74 = 215,018.61 : x
  2. Step 2: Convert to fraction form
    384,784.48/531,001.74 = 215,018.61/x
  3. Step 3: Cross multiply
    384,784.48x = 531,001.74 × 215,018.61
  4. Step 4: Simplify right side
    384,784.48x = 114,175,256,042.38
  5. Step 5: Solve for x
    x = 114,175,256,042.38/384,784.48
  6. Step 6: Final answer
    x = 296,725.21

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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.