Home / 305,488.86-421,560-169,521.18

Finding the Fourth Proportional to 305,488.86, 421,560 and 169,521.18

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Solution

The fourth proportional to 305,488.86, 421,560 and 169,521.18 is: 233,931.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,488.86 : 421,560 = 169,521.18 : x
  2. Step 2: Convert to fraction form
    305,488.86/421,560 = 169,521.18/x
  3. Step 3: Cross multiply
    305,488.86x = 421,560 × 169,521.18
  4. Step 4: Simplify right side
    305,488.86x = 71,463,348,640.80
  5. Step 5: Solve for x
    x = 71,463,348,640.80/305,488.86
  6. Step 6: Final answer
    x = 233,931.11

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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.