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Finding the Fourth Proportional to 315,505.06, 473,258.38 and 125,980.86

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Solution

The fourth proportional to 315,505.06, 473,258.38 and 125,980.86 is: 188,971.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,505.06 : 473,258.38 = 125,980.86 : x
  2. Step 2: Convert to fraction form
    315,505.06/473,258.38 = 125,980.86/x
  3. Step 3: Cross multiply
    315,505.06x = 473,258.38 × 125,980.86
  4. Step 4: Simplify right side
    315,505.06x = 59,621,495,348.31
  5. Step 5: Solve for x
    x = 59,621,495,348.31/315,505.06
  6. Step 6: Final answer
    x = 188,971.60

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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.