Home / 305,285.13-421,243.02-169,297.47

Finding the Fourth Proportional to 305,285.13, 421,243.02 and 169,297.47

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Solution

The fourth proportional to 305,285.13, 421,243.02 and 169,297.47 is: 233,602.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,285.13 : 421,243.02 = 169,297.47 : x
  2. Step 2: Convert to fraction form
    305,285.13/421,243.02 = 169,297.47/x
  3. Step 3: Cross multiply
    305,285.13x = 421,243.02 × 169,297.47
  4. Step 4: Simplify right side
    305,285.13x = 71,315,377,541.16
  5. Step 5: Solve for x
    x = 71,315,377,541.16/305,285.13
  6. Step 6: Final answer
    x = 233,602.53

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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.