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Finding the Fourth Proportional to 353,688.93, 487,160.63 and 271,860.50

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Solution

The fourth proportional to 353,688.93, 487,160.63 and 271,860.50 is: 374,452.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,688.93 : 487,160.63 = 271,860.50 : x
  2. Step 2: Convert to fraction form
    353,688.93/487,160.63 = 271,860.50/x
  3. Step 3: Cross multiply
    353,688.93x = 487,160.63 × 271,860.50
  4. Step 4: Simplify right side
    353,688.93x = 132,439,733,330.19
  5. Step 5: Solve for x
    x = 132,439,733,330.19/353,688.93
  6. Step 6: Final answer
    x = 374,452.58

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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.