Home / 312,985.50-431,919.99-178,849.50

Finding the Fourth Proportional to 312,985.50, 431,919.99 and 178,849.50

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Solution

The fourth proportional to 312,985.50, 431,919.99 and 178,849.50 is: 246,812.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,985.50 : 431,919.99 = 178,849.50 : x
  2. Step 2: Convert to fraction form
    312,985.50/431,919.99 = 178,849.50/x
  3. Step 3: Cross multiply
    312,985.50x = 431,919.99 × 178,849.50
  4. Step 4: Simplify right side
    312,985.50x = 77,248,674,251.51
  5. Step 5: Solve for x
    x = 77,248,674,251.51/312,985.50
  6. Step 6: Final answer
    x = 246,812.31

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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.