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Finding the Fourth Proportional to 315,011.44, 434,706.12 and 171,774.28

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Solution

The fourth proportional to 315,011.44, 434,706.12 and 171,774.28 is: 237,043.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,011.44 : 434,706.12 = 171,774.28 : x
  2. Step 2: Convert to fraction form
    315,011.44/434,706.12 = 171,774.28/x
  3. Step 3: Cross multiply
    315,011.44x = 434,706.12 × 171,774.28
  4. Step 4: Simplify right side
    315,011.44x = 74,671,330,774.59
  5. Step 5: Solve for x
    x = 74,671,330,774.59/315,011.44
  6. Step 6: Final answer
    x = 237,043.23

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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.