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Finding the Fourth Proportional to 325,021.68, 486,999.74 and 312,564.89

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Solution

The fourth proportional to 325,021.68, 486,999.74 and 312,564.89 is: 468,334.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,021.68 : 486,999.74 = 312,564.89 : x
  2. Step 2: Convert to fraction form
    325,021.68/486,999.74 = 312,564.89/x
  3. Step 3: Cross multiply
    325,021.68x = 486,999.74 × 312,564.89
  4. Step 4: Simplify right side
    325,021.68x = 152,219,022,162.04
  5. Step 5: Solve for x
    x = 152,219,022,162.04/325,021.68
  6. Step 6: Final answer
    x = 468,334.98

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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.