Home / 319,171.19-478,827.72-139,285.58

Finding the Fourth Proportional to 319,171.19, 478,827.72 and 139,285.58

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Solution

The fourth proportional to 319,171.19, 478,827.72 and 139,285.58 is: 208,959.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,171.19 : 478,827.72 = 139,285.58 : x
  2. Step 2: Convert to fraction form
    319,171.19/478,827.72 = 139,285.58/x
  3. Step 3: Cross multiply
    319,171.19x = 478,827.72 × 139,285.58
  4. Step 4: Simplify right side
    319,171.19x = 66,693,794,306.14
  5. Step 5: Solve for x
    x = 66,693,794,306.14/319,171.19
  6. Step 6: Final answer
    x = 208,959.32

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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.