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Finding the Fourth Proportional to 313,978.12, 470,983.46 and 103,632.46

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Solution

The fourth proportional to 313,978.12, 470,983.46 and 103,632.46 is: 155,454.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,978.12 : 470,983.46 = 103,632.46 : x
  2. Step 2: Convert to fraction form
    313,978.12/470,983.46 = 103,632.46/x
  3. Step 3: Cross multiply
    313,978.12x = 470,983.46 × 103,632.46
  4. Step 4: Simplify right side
    313,978.12x = 48,809,174,579.11
  5. Step 5: Solve for x
    x = 48,809,174,579.11/313,978.12
  6. Step 6: Final answer
    x = 155,454.06

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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.