Home / 387,865.36-582,342.99-198,461.56

Finding the Fourth Proportional to 387,865.36, 582,342.99 and 198,461.56

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Solution

The fourth proportional to 387,865.36, 582,342.99 and 198,461.56 is: 297,971.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,865.36 : 582,342.99 = 198,461.56 : x
  2. Step 2: Convert to fraction form
    387,865.36/582,342.99 = 198,461.56/x
  3. Step 3: Cross multiply
    387,865.36x = 582,342.99 × 198,461.56
  4. Step 4: Simplify right side
    387,865.36x = 115,572,698,250.46
  5. Step 5: Solve for x
    x = 115,572,698,250.46/387,865.36
  6. Step 6: Final answer
    x = 297,971.18

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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.