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Finding the Fourth Proportional to 315,004.72, 434,715.48 and 171,772.63

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Solution

The fourth proportional to 315,004.72, 434,715.48 and 171,772.63 is: 237,051.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,004.72 : 434,715.48 = 171,772.63 : x
  2. Step 2: Convert to fraction form
    315,004.72/434,715.48 = 171,772.63/x
  3. Step 3: Cross multiply
    315,004.72x = 434,715.48 × 171,772.63
  4. Step 4: Simplify right side
    315,004.72x = 74,672,221,301.31
  5. Step 5: Solve for x
    x = 74,672,221,301.31/315,004.72
  6. Step 6: Final answer
    x = 237,051.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.