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Finding the Fourth Proportional to 239,288.54, 358,810.71 and 79,307.51

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Solution

The fourth proportional to 239,288.54, 358,810.71 and 79,307.51 is: 118,920.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,288.54 : 358,810.71 = 79,307.51 : x
  2. Step 2: Convert to fraction form
    239,288.54/358,810.71 = 79,307.51/x
  3. Step 3: Cross multiply
    239,288.54x = 358,810.71 × 79,307.51
  4. Step 4: Simplify right side
    239,288.54x = 28,456,383,820.32
  5. Step 5: Solve for x
    x = 28,456,383,820.32/239,288.54
  6. Step 6: Final answer
    x = 118,920.80

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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.