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Finding the Fourth Proportional to 331,014.39, 455,929.71 and 254,386.86

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Solution

The fourth proportional to 331,014.39, 455,929.71 and 254,386.86 is: 350,385.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,014.39 : 455,929.71 = 254,386.86 : x
  2. Step 2: Convert to fraction form
    331,014.39/455,929.71 = 254,386.86/x
  3. Step 3: Cross multiply
    331,014.39x = 455,929.71 × 254,386.86
  4. Step 4: Simplify right side
    331,014.39x = 115,982,527,307.61
  5. Step 5: Solve for x
    x = 115,982,527,307.61/331,014.39
  6. Step 6: Final answer
    x = 350,385.15

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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.