Home / 305,259.48-421,259.32-169,306.12

Finding the Fourth Proportional to 305,259.48, 421,259.32 and 169,306.12

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Solution

The fourth proportional to 305,259.48, 421,259.32 and 169,306.12 is: 233,643.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,259.48 : 421,259.32 = 169,306.12 : x
  2. Step 2: Convert to fraction form
    305,259.48/421,259.32 = 169,306.12/x
  3. Step 3: Cross multiply
    305,259.48x = 421,259.32 × 169,306.12
  4. Step 4: Simplify right side
    305,259.48x = 71,321,780,983.04
  5. Step 5: Solve for x
    x = 71,321,780,983.04/305,259.48
  6. Step 6: Final answer
    x = 233,643.13

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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.