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Finding the Fourth Proportional to 286,557.60, 395,431.40 and 159,225.60

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Solution

The fourth proportional to 286,557.60, 395,431.40 and 159,225.60 is: 219,721.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,557.60 : 395,431.40 = 159,225.60 : x
  2. Step 2: Convert to fraction form
    286,557.60/395,431.40 = 159,225.60/x
  3. Step 3: Cross multiply
    286,557.60x = 395,431.40 × 159,225.60
  4. Step 4: Simplify right side
    286,557.60x = 62,962,801,923.84
  5. Step 5: Solve for x
    x = 62,962,801,923.84/286,557.60
  6. Step 6: Final answer
    x = 219,721.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.