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Finding the Fourth Proportional to 355,909.68, 533,911.48 and 131,427.90

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Solution

The fourth proportional to 355,909.68, 533,911.48 and 131,427.90 is: 197,159.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,909.68 : 533,911.48 = 131,427.90 : x
  2. Step 2: Convert to fraction form
    355,909.68/533,911.48 = 131,427.90/x
  3. Step 3: Cross multiply
    355,909.68x = 533,911.48 × 131,427.90
  4. Step 4: Simplify right side
    355,909.68x = 70,170,864,602.29
  5. Step 5: Solve for x
    x = 70,170,864,602.29/355,909.68
  6. Step 6: Final answer
    x = 197,159.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.