Home / 387,738.25-581,607.57-121,519.50

Finding the Fourth Proportional to 387,738.25, 581,607.57 and 121,519.50

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Solution

The fourth proportional to 387,738.25, 581,607.57 and 121,519.50 is: 182,279.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,738.25 : 581,607.57 = 121,519.50 : x
  2. Step 2: Convert to fraction form
    387,738.25/581,607.57 = 121,519.50/x
  3. Step 3: Cross multiply
    387,738.25x = 581,607.57 × 121,519.50
  4. Step 4: Simplify right side
    387,738.25x = 70,676,658,937.83
  5. Step 5: Solve for x
    x = 70,676,658,937.83/387,738.25
  6. Step 6: Final answer
    x = 182,279.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.