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Finding the Fourth Proportional to 471,953.59, 651,072.79 and 319,045.38

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Solution

The fourth proportional to 471,953.59, 651,072.79 and 319,045.38 is: 440,131.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,953.59 : 651,072.79 = 319,045.38 : x
  2. Step 2: Convert to fraction form
    471,953.59/651,072.79 = 319,045.38/x
  3. Step 3: Cross multiply
    471,953.59x = 651,072.79 × 319,045.38
  4. Step 4: Simplify right side
    471,953.59x = 207,721,765,518.15
  5. Step 5: Solve for x
    x = 207,721,765,518.15/471,953.59
  6. Step 6: Final answer
    x = 440,131.77

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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.