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Finding the Fourth Proportional to 139,509.32, 209,225.96 and 38,283.37

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Solution

The fourth proportional to 139,509.32, 209,225.96 and 38,283.37 is: 57,414.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,509.32 : 209,225.96 = 38,283.37 : x
  2. Step 2: Convert to fraction form
    139,509.32/209,225.96 = 38,283.37/x
  3. Step 3: Cross multiply
    139,509.32x = 209,225.96 × 38,283.37
  4. Step 4: Simplify right side
    139,509.32x = 8,009,875,259.71
  5. Step 5: Solve for x
    x = 8,009,875,259.71/139,509.32
  6. Step 6: Final answer
    x = 57,414.63

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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.