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Finding the Fourth Proportional to 545,411.52, 818,154.54 and 185,435.82

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Solution

The fourth proportional to 545,411.52, 818,154.54 and 185,435.82 is: 278,166.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,411.52 : 818,154.54 = 185,435.82 : x
  2. Step 2: Convert to fraction form
    545,411.52/818,154.54 = 185,435.82/x
  3. Step 3: Cross multiply
    545,411.52x = 818,154.54 × 185,435.82
  4. Step 4: Simplify right side
    545,411.52x = 151,715,158,011.62
  5. Step 5: Solve for x
    x = 151,715,158,011.62/545,411.52
  6. Step 6: Final answer
    x = 278,166.40

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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.