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Finding the Fourth Proportional to 576,147.51, 864,332.51 and 221,133.86

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Solution

The fourth proportional to 576,147.51, 864,332.51 and 221,133.86 is: 331,743.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,147.51 : 864,332.51 = 221,133.86 : x
  2. Step 2: Convert to fraction form
    576,147.51/864,332.51 = 221,133.86/x
  3. Step 3: Cross multiply
    576,147.51x = 864,332.51 × 221,133.86
  4. Step 4: Simplify right side
    576,147.51x = 191,133,178,832.46
  5. Step 5: Solve for x
    x = 191,133,178,832.46/576,147.51
  6. Step 6: Final answer
    x = 331,743.48

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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.