Home / 205,416.51-307,920.64-142,955.79

Finding the Fourth Proportional to 205,416.51, 307,920.64 and 142,955.79

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Solution

The fourth proportional to 205,416.51, 307,920.64 and 142,955.79 is: 214,291.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,416.51 : 307,920.64 = 142,955.79 : x
  2. Step 2: Convert to fraction form
    205,416.51/307,920.64 = 142,955.79/x
  3. Step 3: Cross multiply
    205,416.51x = 307,920.64 × 142,955.79
  4. Step 4: Simplify right side
    205,416.51x = 44,019,036,451.51
  5. Step 5: Solve for x
    x = 44,019,036,451.51/205,416.51
  6. Step 6: Final answer
    x = 214,291.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.