Home / 305,386.03-421,257.63-190,465.16

Finding the Fourth Proportional to 305,386.03, 421,257.63 and 190,465.16

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Solution

The fourth proportional to 305,386.03, 421,257.63 and 190,465.16 is: 262,732.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,386.03 : 421,257.63 = 190,465.16 : x
  2. Step 2: Convert to fraction form
    305,386.03/421,257.63 = 190,465.16/x
  3. Step 3: Cross multiply
    305,386.03x = 421,257.63 × 190,465.16
  4. Step 4: Simplify right side
    305,386.03x = 80,234,899,316.72
  5. Step 5: Solve for x
    x = 80,234,899,316.72/305,386.03
  6. Step 6: Final answer
    x = 262,732.71

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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.