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Finding the Fourth Proportional to 208,361.01, 287,479.84 and 130,845.01

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Solution

The fourth proportional to 208,361.01, 287,479.84 and 130,845.01 is: 180,529.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,361.01 : 287,479.84 = 130,845.01 : x
  2. Step 2: Convert to fraction form
    208,361.01/287,479.84 = 130,845.01/x
  3. Step 3: Cross multiply
    208,361.01x = 287,479.84 × 130,845.01
  4. Step 4: Simplify right side
    208,361.01x = 37,615,301,429.31
  5. Step 5: Solve for x
    x = 37,615,301,429.31/208,361.01
  6. Step 6: Final answer
    x = 180,529.47

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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.