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Finding the Fourth Proportional to 208,299.60, 287,453.61 and 117,655.74

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Solution

The fourth proportional to 208,299.60, 287,453.61 and 117,655.74 is: 162,365.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,299.60 : 287,453.61 = 117,655.74 : x
  2. Step 2: Convert to fraction form
    208,299.60/287,453.61 = 117,655.74/x
  3. Step 3: Cross multiply
    208,299.60x = 287,453.61 × 117,655.74
  4. Step 4: Simplify right side
    208,299.60x = 33,820,567,200.22
  5. Step 5: Solve for x
    x = 33,820,567,200.22/208,299.60
  6. Step 6: Final answer
    x = 162,365.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.