Home / 279,738.72-386,039.20-152,415.36

Finding the Fourth Proportional to 279,738.72, 386,039.20 and 152,415.36

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Solution

The fourth proportional to 279,738.72, 386,039.20 and 152,415.36 is: 210,333.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,738.72 : 386,039.20 = 152,415.36 : x
  2. Step 2: Convert to fraction form
    279,738.72/386,039.20 = 152,415.36/x
  3. Step 3: Cross multiply
    279,738.72x = 386,039.20 × 152,415.36
  4. Step 4: Simplify right side
    279,738.72x = 58,838,303,642.11
  5. Step 5: Solve for x
    x = 58,838,303,642.11/279,738.72
  6. Step 6: Final answer
    x = 210,333.07

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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.