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Finding the Fourth Proportional to 386,184.40, 579,276.60 and 359,940.40

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Solution

The fourth proportional to 386,184.40, 579,276.60 and 359,940.40 is: 539,910.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,184.40 : 579,276.60 = 359,940.40 : x
  2. Step 2: Convert to fraction form
    386,184.40/579,276.60 = 359,940.40/x
  3. Step 3: Cross multiply
    386,184.40x = 579,276.60 × 359,940.40
  4. Step 4: Simplify right side
    386,184.40x = 208,505,051,114.64
  5. Step 5: Solve for x
    x = 208,505,051,114.64/386,184.40
  6. Step 6: Final answer
    x = 539,910.60

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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.