Home / 305,365.07-421,403.31-169,419.74

Finding the Fourth Proportional to 305,365.07, 421,403.31 and 169,419.74

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Solution

The fourth proportional to 305,365.07, 421,403.31 and 169,419.74 is: 233,798.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,365.07 : 421,403.31 = 169,419.74 : x
  2. Step 2: Convert to fraction form
    305,365.07/421,403.31 = 169,419.74/x
  3. Step 3: Cross multiply
    305,365.07x = 421,403.31 × 169,419.74
  4. Step 4: Simplify right side
    305,365.07x = 71,394,037,108.32
  5. Step 5: Solve for x
    x = 71,394,037,108.32/305,365.07
  6. Step 6: Final answer
    x = 233,798.96

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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.