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Finding the Fourth Proportional to 239,045.94, 358,454.54 and 139,234.60

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Solution

The fourth proportional to 239,045.94, 358,454.54 and 139,234.60 is: 208,785.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,045.94 : 358,454.54 = 139,234.60 : x
  2. Step 2: Convert to fraction form
    239,045.94/358,454.54 = 139,234.60/x
  3. Step 3: Cross multiply
    239,045.94x = 358,454.54 × 139,234.60
  4. Step 4: Simplify right side
    239,045.94x = 49,909,274,495.08
  5. Step 5: Solve for x
    x = 49,909,274,495.08/239,045.94
  6. Step 6: Final answer
    x = 208,785.28

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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.