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Finding the Fourth Proportional to 455,332.16, 628,359.32 and 251,383.48

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Solution

The fourth proportional to 455,332.16, 628,359.32 and 251,383.48 is: 346,909.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,332.16 : 628,359.32 = 251,383.48 : x
  2. Step 2: Convert to fraction form
    455,332.16/628,359.32 = 251,383.48/x
  3. Step 3: Cross multiply
    455,332.16x = 628,359.32 × 251,383.48
  4. Step 4: Simplify right side
    455,332.16x = 157,959,151,609.59
  5. Step 5: Solve for x
    x = 157,959,151,609.59/455,332.16
  6. Step 6: Final answer
    x = 346,909.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.