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Finding the Fourth Proportional to 545,175.40, 818,637.90 and 368,465.80

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Solution

The fourth proportional to 545,175.40, 818,637.90 and 368,465.80 is: 553,289.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,175.40 : 818,637.90 = 368,465.80 : x
  2. Step 2: Convert to fraction form
    545,175.40/818,637.90 = 368,465.80/x
  3. Step 3: Cross multiply
    545,175.40x = 818,637.90 × 368,465.80
  4. Step 4: Simplify right side
    545,175.40x = 301,640,068,733.82
  5. Step 5: Solve for x
    x = 301,640,068,733.82/545,175.40
  6. Step 6: Final answer
    x = 553,289.95

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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.