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Finding the Fourth Proportional to 208,248.51, 287,168.15 and 178,133.52

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Solution

The fourth proportional to 208,248.51, 287,168.15 and 178,133.52 is: 245,640.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,248.51 : 287,168.15 = 178,133.52 : x
  2. Step 2: Convert to fraction form
    208,248.51/287,168.15 = 178,133.52/x
  3. Step 3: Cross multiply
    208,248.51x = 287,168.15 × 178,133.52
  4. Step 4: Simplify right side
    208,248.51x = 51,154,273,391.39
  5. Step 5: Solve for x
    x = 51,154,273,391.39/208,248.51
  6. Step 6: Final answer
    x = 245,640.53

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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.