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Finding the Fourth Proportional to 319,666.05, 479,445.61 and 117,220.32

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Solution

The fourth proportional to 319,666.05, 479,445.61 and 117,220.32 is: 175,810.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,666.05 : 479,445.61 = 117,220.32 : x
  2. Step 2: Convert to fraction form
    319,666.05/479,445.61 = 117,220.32/x
  3. Step 3: Cross multiply
    319,666.05x = 479,445.61 × 117,220.32
  4. Step 4: Simplify right side
    319,666.05x = 56,200,767,826.80
  5. Step 5: Solve for x
    x = 56,200,767,826.80/319,666.05
  6. Step 6: Final answer
    x = 175,810.87

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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.