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Finding the Fourth Proportional to 355,612.40, 533,564.40 and 131,080.40

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Solution

The fourth proportional to 355,612.40, 533,564.40 and 131,080.40 is: 196,674.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,612.40 : 533,564.40 = 131,080.40 : x
  2. Step 2: Convert to fraction form
    355,612.40/533,564.40 = 131,080.40/x
  3. Step 3: Cross multiply
    355,612.40x = 533,564.40 × 131,080.40
  4. Step 4: Simplify right side
    355,612.40x = 69,939,834,977.76
  5. Step 5: Solve for x
    x = 69,939,834,977.76/355,612.40
  6. Step 6: Final answer
    x = 196,674.34

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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.