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Finding the Fourth Proportional to 355,794.39, 533,688.48 and 145,284.57

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Solution

The fourth proportional to 355,794.39, 533,688.48 and 145,284.57 is: 217,925.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,794.39 : 533,688.48 = 145,284.57 : x
  2. Step 2: Convert to fraction form
    355,794.39/533,688.48 = 145,284.57/x
  3. Step 3: Cross multiply
    355,794.39x = 533,688.48 × 145,284.57
  4. Step 4: Simplify right side
    355,794.39x = 77,536,701,330.75
  5. Step 5: Solve for x
    x = 77,536,701,330.75/355,794.39
  6. Step 6: Final answer
    x = 217,925.59

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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.