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Finding the Fourth Proportional to 315,504.88, 473,258.10 and 125,980.67

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Solution

The fourth proportional to 315,504.88, 473,258.10 and 125,980.67 is: 188,971.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,504.88 : 473,258.10 = 125,980.67 : x
  2. Step 2: Convert to fraction form
    315,504.88/473,258.10 = 125,980.67/x
  3. Step 3: Cross multiply
    315,504.88x = 473,258.10 × 125,980.67
  4. Step 4: Simplify right side
    315,504.88x = 59,621,372,205.98
  5. Step 5: Solve for x
    x = 59,621,372,205.98/315,504.88
  6. Step 6: Final answer
    x = 188,971.32

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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.