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Finding the Fourth Proportional to 208,019.28, 287,066.28 and 112,525.68

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Solution

The fourth proportional to 208,019.28, 287,066.28 and 112,525.68 is: 155,285.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,019.28 : 287,066.28 = 112,525.68 : x
  2. Step 2: Convert to fraction form
    208,019.28/287,066.28 = 112,525.68/x
  3. Step 3: Cross multiply
    208,019.28x = 287,066.28 × 112,525.68
  4. Step 4: Simplify right side
    208,019.28x = 32,302,328,362.07
  5. Step 5: Solve for x
    x = 32,302,328,362.07/208,019.28
  6. Step 6: Final answer
    x = 155,285.26

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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.