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Finding the Fourth Proportional to 348,408, 480,812.76 and 197,514.72

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Solution

The fourth proportional to 348,408, 480,812.76 and 197,514.72 is: 272,575.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,408 : 480,812.76 = 197,514.72 : x
  2. Step 2: Convert to fraction form
    348,408/480,812.76 = 197,514.72/x
  3. Step 3: Cross multiply
    348,408x = 480,812.76 × 197,514.72
  4. Step 4: Simplify right side
    348,408x = 94,967,597,663.83
  5. Step 5: Solve for x
    x = 94,967,597,663.83/348,408
  6. Step 6: Final answer
    x = 272,575.82

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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.