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Finding the Fourth Proportional to 260,628.66, 359,637.21 and 145,913.58

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Solution

The fourth proportional to 260,628.66, 359,637.21 and 145,913.58 is: 201,343.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,628.66 : 359,637.21 = 145,913.58 : x
  2. Step 2: Convert to fraction form
    260,628.66/359,637.21 = 145,913.58/x
  3. Step 3: Cross multiply
    260,628.66x = 359,637.21 × 145,913.58
  4. Step 4: Simplify right side
    260,628.66x = 52,475,952,812.31
  5. Step 5: Solve for x
    x = 52,475,952,812.31/260,628.66
  6. Step 6: Final answer
    x = 201,343.75

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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.