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Finding the Fourth Proportional to 291,816, 437,724 and 70,200

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Solution

The fourth proportional to 291,816, 437,724 and 70,200 is: 105,300

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,816 : 437,724 = 70,200 : x
  2. Step 2: Convert to fraction form
    291,816/437,724 = 70,200/x
  3. Step 3: Cross multiply
    291,816x = 437,724 × 70,200
  4. Step 4: Simplify right side
    291,816x = 30,728,224,800
  5. Step 5: Solve for x
    x = 30,728,224,800/291,816
  6. Step 6: Final answer
    x = 105,300

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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.