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Finding the Fourth Proportional to 291,221.34, 402,009.45 and 195,783.39

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Solution

The fourth proportional to 291,221.34, 402,009.45 and 195,783.39 is: 270,264.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,221.34 : 402,009.45 = 195,783.39 : x
  2. Step 2: Convert to fraction form
    291,221.34/402,009.45 = 195,783.39/x
  3. Step 3: Cross multiply
    291,221.34x = 402,009.45 × 195,783.39
  4. Step 4: Simplify right side
    291,221.34x = 78,706,772,933.04
  5. Step 5: Solve for x
    x = 78,706,772,933.04/291,221.34
  6. Step 6: Final answer
    x = 270,264.44

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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.