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Finding the Fourth Proportional to 545,737.20, 818,411.40 and 190,762.80

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Solution

The fourth proportional to 545,737.20, 818,411.40 and 190,762.80 is: 286,076.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,737.20 : 818,411.40 = 190,762.80 : x
  2. Step 2: Convert to fraction form
    545,737.20/818,411.40 = 190,762.80/x
  3. Step 3: Cross multiply
    545,737.20x = 818,411.40 × 190,762.80
  4. Step 4: Simplify right side
    545,737.20x = 156,122,450,215.92
  5. Step 5: Solve for x
    x = 156,122,450,215.92/545,737.20
  6. Step 6: Final answer
    x = 286,076.25

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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.