Home / 387,144.69-534,263.33-212,718.53

Finding the Fourth Proportional to 387,144.69, 534,263.33 and 212,718.53

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Solution

The fourth proportional to 387,144.69, 534,263.33 and 212,718.53 is: 293,553.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,144.69 : 534,263.33 = 212,718.53 : x
  2. Step 2: Convert to fraction form
    387,144.69/534,263.33 = 212,718.53/x
  3. Step 3: Cross multiply
    387,144.69x = 534,263.33 × 212,718.53
  4. Step 4: Simplify right side
    387,144.69x = 113,647,712,459.89
  5. Step 5: Solve for x
    x = 113,647,712,459.89/387,144.69
  6. Step 6: Final answer
    x = 293,553.58

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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.