Home / 305,342.02-421,422.40-169,419.70

Finding the Fourth Proportional to 305,342.02, 421,422.40 and 169,419.70

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Solution

The fourth proportional to 305,342.02, 421,422.40 and 169,419.70 is: 233,827.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,342.02 : 421,422.40 = 169,419.70 : x
  2. Step 2: Convert to fraction form
    305,342.02/421,422.40 = 169,419.70/x
  3. Step 3: Cross multiply
    305,342.02x = 421,422.40 × 169,419.70
  4. Step 4: Simplify right side
    305,342.02x = 71,397,256,581.28
  5. Step 5: Solve for x
    x = 71,397,256,581.28/305,342.02
  6. Step 6: Final answer
    x = 233,827.16

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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.