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Finding the Fourth Proportional to 314,782.50, 434,399.93 and 171,542.58

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Solution

The fourth proportional to 314,782.50, 434,399.93 and 171,542.58 is: 236,728.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,782.50 : 434,399.93 = 171,542.58 : x
  2. Step 2: Convert to fraction form
    314,782.50/434,399.93 = 171,542.58/x
  3. Step 3: Cross multiply
    314,782.50x = 434,399.93 × 171,542.58
  4. Step 4: Simplify right side
    314,782.50x = 74,518,084,744.02
  5. Step 5: Solve for x
    x = 74,518,084,744.02/314,782.50
  6. Step 6: Final answer
    x = 236,728.80

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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.