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Finding the Fourth Proportional to 208,425.56, 287,632.62 and 127,897.58

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Solution

The fourth proportional to 208,425.56, 287,632.62 and 127,897.58 is: 176,501.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,425.56 : 287,632.62 = 127,897.58 : x
  2. Step 2: Convert to fraction form
    208,425.56/287,632.62 = 127,897.58/x
  3. Step 3: Cross multiply
    208,425.56x = 287,632.62 × 127,897.58
  4. Step 4: Simplify right side
    208,425.56x = 36,787,516,027.06
  5. Step 5: Solve for x
    x = 36,787,516,027.06/208,425.56
  6. Step 6: Final answer
    x = 176,501.94

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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.