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Finding the Fourth Proportional to 208,297.59, 287,369.28 and 121,068.18

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Solution

The fourth proportional to 208,297.59, 287,369.28 and 121,068.18 is: 167,026.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,297.59 : 287,369.28 = 121,068.18 : x
  2. Step 2: Convert to fraction form
    208,297.59/287,369.28 = 121,068.18/x
  3. Step 3: Cross multiply
    208,297.59x = 287,369.28 × 121,068.18
  4. Step 4: Simplify right side
    208,297.59x = 34,791,275,717.51
  5. Step 5: Solve for x
    x = 34,791,275,717.51/208,297.59
  6. Step 6: Final answer
    x = 167,026.78

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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.