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Finding the Fourth Proportional to 312,840.54, 431,722.08 and 169,602.84

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Solution

The fourth proportional to 312,840.54, 431,722.08 and 169,602.84 is: 234,053.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,840.54 : 431,722.08 = 169,602.84 : x
  2. Step 2: Convert to fraction form
    312,840.54/431,722.08 = 169,602.84/x
  3. Step 3: Cross multiply
    312,840.54x = 431,722.08 × 169,602.84
  4. Step 4: Simplify right side
    312,840.54x = 73,221,290,858.71
  5. Step 5: Solve for x
    x = 73,221,290,858.71/312,840.54
  6. Step 6: Final answer
    x = 234,053.08

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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.