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Finding the Fourth Proportional to 291,615.84, 437,423.78 and 69,999.84

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Solution

The fourth proportional to 291,615.84, 437,423.78 and 69,999.84 is: 104,999.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,615.84 : 437,423.78 = 69,999.84 : x
  2. Step 2: Convert to fraction form
    291,615.84/437,423.78 = 69,999.84/x
  3. Step 3: Cross multiply
    291,615.84x = 437,423.78 × 69,999.84
  4. Step 4: Simplify right side
    291,615.84x = 30,619,594,612.20
  5. Step 5: Solve for x
    x = 30,619,594,612.20/291,615.84
  6. Step 6: Final answer
    x = 104,999.76

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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.