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Finding the Fourth Proportional to 357,105.80, 535,284.88 and 120,366.64

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Solution

The fourth proportional to 357,105.80, 535,284.88 and 120,366.64 is: 180,423.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,105.80 : 535,284.88 = 120,366.64 : x
  2. Step 2: Convert to fraction form
    357,105.80/535,284.88 = 120,366.64/x
  3. Step 3: Cross multiply
    357,105.80x = 535,284.88 × 120,366.64
  4. Step 4: Simplify right side
    357,105.80x = 64,430,442,448.40
  5. Step 5: Solve for x
    x = 64,430,442,448.40/357,105.80
  6. Step 6: Final answer
    x = 180,423.96

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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.