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Finding the Fourth Proportional to 315,133.52, 434,890.12 and 171,898.68

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Solution

The fourth proportional to 315,133.52, 434,890.12 and 171,898.68 is: 237,223.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,133.52 : 434,890.12 = 171,898.68 : x
  2. Step 2: Convert to fraction form
    315,133.52/434,890.12 = 171,898.68/x
  3. Step 3: Cross multiply
    315,133.52x = 434,890.12 × 171,898.68
  4. Step 4: Simplify right side
    315,133.52x = 74,757,037,573.04
  5. Step 5: Solve for x
    x = 74,757,037,573.04/315,133.52
  6. Step 6: Final answer
    x = 237,223.38

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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.