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Finding the Fourth Proportional to 290,866.60, 435,975.90 and 113,314.60

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Solution

The fourth proportional to 290,866.60, 435,975.90 and 113,314.60 is: 169,845.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,866.60 : 435,975.90 = 113,314.60 : x
  2. Step 2: Convert to fraction form
    290,866.60/435,975.90 = 113,314.60/x
  3. Step 3: Cross multiply
    290,866.60x = 435,975.90 × 113,314.60
  4. Step 4: Simplify right side
    290,866.60x = 49,402,434,718.14
  5. Step 5: Solve for x
    x = 49,402,434,718.14/290,866.60
  6. Step 6: Final answer
    x = 169,845.68

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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.