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Finding the Fourth Proportional to 548,412.86, 756,848.32 and 306,717.94

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Solution

The fourth proportional to 548,412.86, 756,848.32 and 306,717.94 is: 423,292.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,412.86 : 756,848.32 = 306,717.94 : x
  2. Step 2: Convert to fraction form
    548,412.86/756,848.32 = 306,717.94/x
  3. Step 3: Cross multiply
    548,412.86x = 756,848.32 × 306,717.94
  4. Step 4: Simplify right side
    548,412.86x = 232,138,957,602.86
  5. Step 5: Solve for x
    x = 232,138,957,602.86/548,412.86
  6. Step 6: Final answer
    x = 423,292.33

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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.