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Finding the Fourth Proportional to 291,309.04, 436,963.36 and 80,946.88

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Solution

The fourth proportional to 291,309.04, 436,963.36 and 80,946.88 is: 121,420.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,309.04 : 436,963.36 = 80,946.88 : x
  2. Step 2: Convert to fraction form
    291,309.04/436,963.36 = 80,946.88/x
  3. Step 3: Cross multiply
    291,309.04x = 436,963.36 × 80,946.88
  4. Step 4: Simplify right side
    291,309.04x = 35,370,820,666.32
  5. Step 5: Solve for x
    x = 35,370,820,666.32/291,309.04
  6. Step 6: Final answer
    x = 121,420.26

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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.