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Finding the Fourth Proportional to 505,947.40, 759,212.70 and 190,630.60

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Solution

The fourth proportional to 505,947.40, 759,212.70 and 190,630.60 is: 286,055.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,947.40 : 759,212.70 = 190,630.60 : x
  2. Step 2: Convert to fraction form
    505,947.40/759,212.70 = 190,630.60/x
  3. Step 3: Cross multiply
    505,947.40x = 759,212.70 × 190,630.60
  4. Step 4: Simplify right side
    505,947.40x = 144,729,172,528.62
  5. Step 5: Solve for x
    x = 144,729,172,528.62/505,947.40
  6. Step 6: Final answer
    x = 286,055.77

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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.