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Finding the Fourth Proportional to 315,186.83, 434,955.80 and 179,220.81

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Solution

The fourth proportional to 315,186.83, 434,955.80 and 179,220.81 is: 247,323.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,186.83 : 434,955.80 = 179,220.81 : x
  2. Step 2: Convert to fraction form
    315,186.83/434,955.80 = 179,220.81/x
  3. Step 3: Cross multiply
    315,186.83x = 434,955.80 × 179,220.81
  4. Step 4: Simplify right side
    315,186.83x = 77,953,128,167.37
  5. Step 5: Solve for x
    x = 77,953,128,167.37/315,186.83
  6. Step 6: Final answer
    x = 247,323.56

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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.