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Finding the Fourth Proportional to 291,615.60, 437,423.36 and 69,999.60

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Solution

The fourth proportional to 291,615.60, 437,423.36 and 69,999.60 is: 104,999.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,615.60 : 437,423.36 = 69,999.60 : x
  2. Step 2: Convert to fraction form
    291,615.60/437,423.36 = 69,999.60/x
  3. Step 3: Cross multiply
    291,615.60x = 437,423.36 × 69,999.60
  4. Step 4: Simplify right side
    291,615.60x = 30,619,459,880.66
  5. Step 5: Solve for x
    x = 30,619,459,880.66/291,615.60
  6. Step 6: Final answer
    x = 104,999.39

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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.