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Finding the Fourth Proportional to 325,807, 488,557.13 and 126,220.84

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Solution

The fourth proportional to 325,807, 488,557.13 and 126,220.84 is: 189,271.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,807 : 488,557.13 = 126,220.84 : x
  2. Step 2: Convert to fraction form
    325,807/488,557.13 = 126,220.84/x
  3. Step 3: Cross multiply
    325,807x = 488,557.13 × 126,220.84
  4. Step 4: Simplify right side
    325,807x = 61,666,091,336.59
  5. Step 5: Solve for x
    x = 61,666,091,336.59/325,807
  6. Step 6: Final answer
    x = 189,271.84

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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.