Home / 305,731.02-421,920.94-176,665.21

Finding the Fourth Proportional to 305,731.02, 421,920.94 and 176,665.21

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Solution

The fourth proportional to 305,731.02, 421,920.94 and 176,665.21 is: 243,805.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,731.02 : 421,920.94 = 176,665.21 : x
  2. Step 2: Convert to fraction form
    305,731.02/421,920.94 = 176,665.21/x
  3. Step 3: Cross multiply
    305,731.02x = 421,920.94 × 176,665.21
  4. Step 4: Simplify right side
    305,731.02x = 74,538,751,468.50
  5. Step 5: Solve for x
    x = 74,538,751,468.50/305,731.02
  6. Step 6: Final answer
    x = 243,805.00

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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.