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Finding the Fourth Proportional to 545,865.71, 818,685.63 and 146,411.44

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Solution

The fourth proportional to 545,865.71, 818,685.63 and 146,411.44 is: 219,586.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,865.71 : 818,685.63 = 146,411.44 : x
  2. Step 2: Convert to fraction form
    545,865.71/818,685.63 = 146,411.44/x
  3. Step 3: Cross multiply
    545,865.71x = 818,685.63 × 146,411.44
  4. Step 4: Simplify right side
    545,865.71x = 119,864,939,948.89
  5. Step 5: Solve for x
    x = 119,864,939,948.89/545,865.71
  6. Step 6: Final answer
    x = 219,586.87

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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.