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Finding the Fourth Proportional to 545,397.93, 818,152.74 and 208,721.70

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Solution

The fourth proportional to 545,397.93, 818,152.74 and 208,721.70 is: 313,103.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,397.93 : 818,152.74 = 208,721.70 : x
  2. Step 2: Convert to fraction form
    545,397.93/818,152.74 = 208,721.70/x
  3. Step 3: Cross multiply
    545,397.93x = 818,152.74 × 208,721.70
  4. Step 4: Simplify right side
    545,397.93x = 170,766,230,752.46
  5. Step 5: Solve for x
    x = 170,766,230,752.46/545,397.93
  6. Step 6: Final answer
    x = 313,103.92

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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.