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Finding the Fourth Proportional to 291,751.50, 402,617.07 and 157,615.50

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Solution

The fourth proportional to 291,751.50, 402,617.07 and 157,615.50 is: 217,509.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,751.50 : 402,617.07 = 157,615.50 : x
  2. Step 2: Convert to fraction form
    291,751.50/402,617.07 = 157,615.50/x
  3. Step 3: Cross multiply
    291,751.50x = 402,617.07 × 157,615.50
  4. Step 4: Simplify right side
    291,751.50x = 63,458,690,796.59
  5. Step 5: Solve for x
    x = 63,458,690,796.59/291,751.50
  6. Step 6: Final answer
    x = 217,509.39

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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.