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Finding the Fourth Proportional to 356,296.40, 534,493.20 and 131,602.40

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Solution

The fourth proportional to 356,296.40, 534,493.20 and 131,602.40 is: 197,421.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,296.40 : 534,493.20 = 131,602.40 : x
  2. Step 2: Convert to fraction form
    356,296.40/534,493.20 = 131,602.40/x
  3. Step 3: Cross multiply
    356,296.40x = 534,493.20 × 131,602.40
  4. Step 4: Simplify right side
    356,296.40x = 70,340,587,903.68
  5. Step 5: Solve for x
    x = 70,340,587,903.68/356,296.40
  6. Step 6: Final answer
    x = 197,421.55

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1.5x scale

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.