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Finding the Fourth Proportional to 355,496.77, 533,245.70 and 142,360.66

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Solution

The fourth proportional to 355,496.77, 533,245.70 and 142,360.66 is: 213,541.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,496.77 : 533,245.70 = 142,360.66 : x
  2. Step 2: Convert to fraction form
    355,496.77/533,245.70 = 142,360.66/x
  3. Step 3: Cross multiply
    355,496.77x = 533,245.70 × 142,360.66
  4. Step 4: Simplify right side
    355,496.77x = 75,913,209,794.16
  5. Step 5: Solve for x
    x = 75,913,209,794.16/355,496.77
  6. Step 6: Final answer
    x = 213,541.21

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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.