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Finding the Fourth Proportional to 315,415.78, 473,130.38 and 113,025.08

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Solution

The fourth proportional to 315,415.78, 473,130.38 and 113,025.08 is: 169,540.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,415.78 : 473,130.38 = 113,025.08 : x
  2. Step 2: Convert to fraction form
    315,415.78/473,130.38 = 113,025.08/x
  3. Step 3: Cross multiply
    315,415.78x = 473,130.38 × 113,025.08
  4. Step 4: Simplify right side
    315,415.78x = 53,475,600,515.32
  5. Step 5: Solve for x
    x = 53,475,600,515.32/315,415.78
  6. Step 6: Final answer
    x = 169,540.03

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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.