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Finding the Fourth Proportional to 429,783.78, 644,804.46 and 173,484.39

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Solution

The fourth proportional to 429,783.78, 644,804.46 and 173,484.39 is: 260,278.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,783.78 : 644,804.46 = 173,484.39 : x
  2. Step 2: Convert to fraction form
    429,783.78/644,804.46 = 173,484.39/x
  3. Step 3: Cross multiply
    429,783.78x = 644,804.46 × 173,484.39
  4. Step 4: Simplify right side
    429,783.78x = 111,863,508,412.38
  5. Step 5: Solve for x
    x = 111,863,508,412.38/429,783.78
  6. Step 6: Final answer
    x = 260,278.57

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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.