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Finding the Fourth Proportional to 291,994.88, 402,953.47 and 157,858.88

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Solution

The fourth proportional to 291,994.88, 402,953.47 and 157,858.88 is: 217,845.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,994.88 : 402,953.47 = 157,858.88 : x
  2. Step 2: Convert to fraction form
    291,994.88/402,953.47 = 157,858.88/x
  3. Step 3: Cross multiply
    291,994.88x = 402,953.47 × 157,858.88
  4. Step 4: Simplify right side
    291,994.88x = 63,609,781,056.90
  5. Step 5: Solve for x
    x = 63,609,781,056.90/291,994.88
  6. Step 6: Final answer
    x = 217,845.54

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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.