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Finding the Fourth Proportional to 350,921.61, 484,275.65 and 189,779.81

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Solution

The fourth proportional to 350,921.61, 484,275.65 and 189,779.81 is: 261,898.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,921.61 : 484,275.65 = 189,779.81 : x
  2. Step 2: Convert to fraction form
    350,921.61/484,275.65 = 189,779.81/x
  3. Step 3: Cross multiply
    350,921.61x = 484,275.65 × 189,779.81
  4. Step 4: Simplify right side
    350,921.61x = 91,905,737,474.35
  5. Step 5: Solve for x
    x = 91,905,737,474.35/350,921.61
  6. Step 6: Final answer
    x = 261,898.20

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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.