Home / 305,210.17-421,187.92-169,244.20

Finding the Fourth Proportional to 305,210.17, 421,187.92 and 169,244.20

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Solution

The fourth proportional to 305,210.17, 421,187.92 and 169,244.20 is: 233,555.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,210.17 : 421,187.92 = 169,244.20 : x
  2. Step 2: Convert to fraction form
    305,210.17/421,187.92 = 169,244.20/x
  3. Step 3: Cross multiply
    305,210.17x = 421,187.92 × 169,244.20
  4. Step 4: Simplify right side
    305,210.17x = 71,283,612,570.06
  5. Step 5: Solve for x
    x = 71,283,612,570.06/305,210.17
  6. Step 6: Final answer
    x = 233,555.82

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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.