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Finding the Fourth Proportional to 497,483.55, 686,527.95 and 271,129.05

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Solution

The fourth proportional to 497,483.55, 686,527.95 and 271,129.05 is: 374,158.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,483.55 : 686,527.95 = 271,129.05 : x
  2. Step 2: Convert to fraction form
    497,483.55/686,527.95 = 271,129.05/x
  3. Step 3: Cross multiply
    497,483.55x = 686,527.95 × 271,129.05
  4. Step 4: Simplify right side
    497,483.55x = 186,137,670,881.95
  5. Step 5: Solve for x
    x = 186,137,670,881.95/497,483.55
  6. Step 6: Final answer
    x = 374,158.44

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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.