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Finding the Fourth Proportional to 315,022.62, 472,535.64 and 78,365.34

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Solution

The fourth proportional to 315,022.62, 472,535.64 and 78,365.34 is: 117,548.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,022.62 : 472,535.64 = 78,365.34 : x
  2. Step 2: Convert to fraction form
    315,022.62/472,535.64 = 78,365.34/x
  3. Step 3: Cross multiply
    315,022.62x = 472,535.64 × 78,365.34
  4. Step 4: Simplify right side
    315,022.62x = 37,030,416,090.72
  5. Step 5: Solve for x
    x = 37,030,416,090.72/315,022.62
  6. Step 6: Final answer
    x = 117,548.44

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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.