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Finding the Fourth Proportional to 208,368.63, 287,550.09 and 112,875.26

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Solution

The fourth proportional to 208,368.63, 287,550.09 and 112,875.26 is: 155,768.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,368.63 : 287,550.09 = 112,875.26 : x
  2. Step 2: Convert to fraction form
    208,368.63/287,550.09 = 112,875.26/x
  3. Step 3: Cross multiply
    208,368.63x = 287,550.09 × 112,875.26
  4. Step 4: Simplify right side
    208,368.63x = 32,457,289,734.02
  5. Step 5: Solve for x
    x = 32,457,289,734.02/208,368.63
  6. Step 6: Final answer
    x = 155,768.60

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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.