Home / 319,930.74-479,921.63-109,570.50

Finding the Fourth Proportional to 319,930.74, 479,921.63 and 109,570.50

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Solution

The fourth proportional to 319,930.74, 479,921.63 and 109,570.50 is: 164,364.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,930.74 : 479,921.63 = 109,570.50 : x
  2. Step 2: Convert to fraction form
    319,930.74/479,921.63 = 109,570.50/x
  3. Step 3: Cross multiply
    319,930.74x = 479,921.63 × 109,570.50
  4. Step 4: Simplify right side
    319,930.74x = 52,585,252,412.06
  5. Step 5: Solve for x
    x = 52,585,252,412.06/319,930.74
  6. Step 6: Final answer
    x = 164,364.49

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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.