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Finding the Fourth Proportional to 355,005.20, 532,507.80 and 189,117.20

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Solution

The fourth proportional to 355,005.20, 532,507.80 and 189,117.20 is: 283,675.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,005.20 : 532,507.80 = 189,117.20 : x
  2. Step 2: Convert to fraction form
    355,005.20/532,507.80 = 189,117.20/x
  3. Step 3: Cross multiply
    355,005.20x = 532,507.80 × 189,117.20
  4. Step 4: Simplify right side
    355,005.20x = 100,706,384,114.16
  5. Step 5: Solve for x
    x = 100,706,384,114.16/355,005.20
  6. Step 6: Final answer
    x = 283,675.80

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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.