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Finding the Fourth Proportional to 363,187.20, 545,947.20 and 258,729.60

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Solution

The fourth proportional to 363,187.20, 545,947.20 and 258,729.60 is: 388,925.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,187.20 : 545,947.20 = 258,729.60 : x
  2. Step 2: Convert to fraction form
    363,187.20/545,947.20 = 258,729.60/x
  3. Step 3: Cross multiply
    363,187.20x = 545,947.20 × 258,729.60
  4. Step 4: Simplify right side
    363,187.20x = 141,252,700,677.12
  5. Step 5: Solve for x
    x = 141,252,700,677.12/363,187.20
  6. Step 6: Final answer
    x = 388,925.33

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1.5x scale

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.