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Finding the Fourth Proportional to 347,398.53, 520,830.78 and 176,479.72

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Solution

The fourth proportional to 347,398.53, 520,830.78 and 176,479.72 is: 264,583.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,398.53 : 520,830.78 = 176,479.72 : x
  2. Step 2: Convert to fraction form
    347,398.53/520,830.78 = 176,479.72/x
  3. Step 3: Cross multiply
    347,398.53x = 520,830.78 × 176,479.72
  4. Step 4: Simplify right side
    347,398.53x = 91,916,069,780.58
  5. Step 5: Solve for x
    x = 91,916,069,780.58/347,398.53
  6. Step 6: Final answer
    x = 264,583.94

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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.