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Finding the Fourth Proportional to 286,991.48, 430,486.50 and 136,776.44

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Solution

The fourth proportional to 286,991.48, 430,486.50 and 136,776.44 is: 205,164.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,991.48 : 430,486.50 = 136,776.44 : x
  2. Step 2: Convert to fraction form
    286,991.48/430,486.50 = 136,776.44/x
  3. Step 3: Cross multiply
    286,991.48x = 430,486.50 × 136,776.44
  4. Step 4: Simplify right side
    286,991.48x = 58,880,410,938.06
  5. Step 5: Solve for x
    x = 58,880,410,938.06/286,991.48
  6. Step 6: Final answer
    x = 205,164.32

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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.