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Finding the Fourth Proportional to 308,555.51, 425,846.01 and 172,597.01

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Solution

The fourth proportional to 308,555.51, 425,846.01 and 172,597.01 is: 238,205.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,555.51 : 425,846.01 = 172,597.01 : x
  2. Step 2: Convert to fraction form
    308,555.51/425,846.01 = 172,597.01/x
  3. Step 3: Cross multiply
    308,555.51x = 425,846.01 × 172,597.01
  4. Step 4: Simplify right side
    308,555.51x = 73,499,745,917.20
  5. Step 5: Solve for x
    x = 73,499,745,917.20/308,555.51
  6. Step 6: Final answer
    x = 238,205.91

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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.