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Finding the Fourth Proportional to 286,994.80, 430,470.60 and 127,120.24

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Solution

The fourth proportional to 286,994.80, 430,470.60 and 127,120.24 is: 190,670.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,994.80 : 430,470.60 = 127,120.24 : x
  2. Step 2: Convert to fraction form
    286,994.80/430,470.60 = 127,120.24/x
  3. Step 3: Cross multiply
    286,994.80x = 430,470.60 × 127,120.24
  4. Step 4: Simplify right side
    286,994.80x = 54,721,525,984.94
  5. Step 5: Solve for x
    x = 54,721,525,984.94/286,994.80
  6. Step 6: Final answer
    x = 190,670.79

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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.