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Finding the Fourth Proportional to 291,715.80, 437,573.70 and 70,099.80

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Solution

The fourth proportional to 291,715.80, 437,573.70 and 70,099.80 is: 105,149.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,715.80 : 437,573.70 = 70,099.80 : x
  2. Step 2: Convert to fraction form
    291,715.80/437,573.70 = 70,099.80/x
  3. Step 3: Cross multiply
    291,715.80x = 437,573.70 × 70,099.80
  4. Step 4: Simplify right side
    291,715.80x = 30,673,828,855.26
  5. Step 5: Solve for x
    x = 30,673,828,855.26/291,715.80
  6. Step 6: Final answer
    x = 105,149.70

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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.