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Finding the Fourth Proportional to 139,798.28, 209,699.86 and 46,306.46

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Solution

The fourth proportional to 139,798.28, 209,699.86 and 46,306.46 is: 69,460.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,798.28 : 209,699.86 = 46,306.46 : x
  2. Step 2: Convert to fraction form
    139,798.28/209,699.86 = 46,306.46/x
  3. Step 3: Cross multiply
    139,798.28x = 209,699.86 × 46,306.46
  4. Step 4: Simplify right side
    139,798.28x = 9,710,458,179.10
  5. Step 5: Solve for x
    x = 9,710,458,179.10/139,798.28
  6. Step 6: Final answer
    x = 69,460.50

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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.