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Finding the Fourth Proportional to 545,904.80, 818,565.60 and 190,930.40

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Solution

The fourth proportional to 545,904.80, 818,565.60 and 190,930.40 is: 286,293.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,904.80 : 818,565.60 = 190,930.40 : x
  2. Step 2: Convert to fraction form
    545,904.80/818,565.60 = 190,930.40/x
  3. Step 3: Cross multiply
    545,904.80x = 818,565.60 × 190,930.40
  4. Step 4: Simplify right side
    545,904.80x = 156,289,057,434.24
  5. Step 5: Solve for x
    x = 156,289,057,434.24/545,904.80
  6. Step 6: Final answer
    x = 286,293.61

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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.