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Finding the Fourth Proportional to 291,420.32, 436,980.08 and 133,513.44

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Solution

The fourth proportional to 291,420.32, 436,980.08 and 133,513.44 is: 200,201.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,420.32 : 436,980.08 = 133,513.44 : x
  2. Step 2: Convert to fraction form
    291,420.32/436,980.08 = 133,513.44/x
  3. Step 3: Cross multiply
    291,420.32x = 436,980.08 × 133,513.44
  4. Step 4: Simplify right side
    291,420.32x = 58,342,713,692.28
  5. Step 5: Solve for x
    x = 58,342,713,692.28/291,420.32
  6. Step 6: Final answer
    x = 200,201.25

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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.