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Finding the Fourth Proportional to 319,779.81, 479,586.15 and 95,079.74

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Solution

The fourth proportional to 319,779.81, 479,586.15 and 95,079.74 is: 142,594.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,779.81 : 479,586.15 = 95,079.74 : x
  2. Step 2: Convert to fraction form
    319,779.81/479,586.15 = 95,079.74/x
  3. Step 3: Cross multiply
    319,779.81x = 479,586.15 × 95,079.74
  4. Step 4: Simplify right side
    319,779.81x = 45,598,924,051.67
  5. Step 5: Solve for x
    x = 45,598,924,051.67/319,779.81
  6. Step 6: Final answer
    x = 142,594.76

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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.