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Finding the Fourth Proportional to 319,013.10, 478,584.45 and 108,672.30

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Solution

The fourth proportional to 319,013.10, 478,584.45 and 108,672.30 is: 163,030.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,013.10 : 478,584.45 = 108,672.30 : x
  2. Step 2: Convert to fraction form
    319,013.10/478,584.45 = 108,672.30/x
  3. Step 3: Cross multiply
    319,013.10x = 478,584.45 × 108,672.30
  4. Step 4: Simplify right side
    319,013.10x = 52,008,872,925.74
  5. Step 5: Solve for x
    x = 52,008,872,925.74/319,013.10
  6. Step 6: Final answer
    x = 163,030.52

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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.