Home / 291,724.80-437,587.20-70,108.80

Finding the Fourth Proportional to 291,724.80, 437,587.20 and 70,108.80

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Solution

The fourth proportional to 291,724.80, 437,587.20 and 70,108.80 is: 105,163.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,724.80 : 437,587.20 = 70,108.80 : x
  2. Step 2: Convert to fraction form
    291,724.80/437,587.20 = 70,108.80/x
  3. Step 3: Cross multiply
    291,724.80x = 437,587.20 × 70,108.80
  4. Step 4: Simplify right side
    291,724.80x = 30,678,713,487.36
  5. Step 5: Solve for x
    x = 30,678,713,487.36/291,724.80
  6. Step 6: Final answer
    x = 105,163.20

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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.