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Finding the Fourth Proportional to 576,221.40, 864,332.10 and 155,496.60

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Solution

The fourth proportional to 576,221.40, 864,332.10 and 155,496.60 is: 233,244.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,221.40 : 864,332.10 = 155,496.60 : x
  2. Step 2: Convert to fraction form
    576,221.40/864,332.10 = 155,496.60/x
  3. Step 3: Cross multiply
    576,221.40x = 864,332.10 × 155,496.60
  4. Step 4: Simplify right side
    576,221.40x = 134,400,702,820.86
  5. Step 5: Solve for x
    x = 134,400,702,820.86/576,221.40
  6. Step 6: Final answer
    x = 233,244.90

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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.