Home / 340,821.40-470,312.30-187,860.79

Finding the Fourth Proportional to 340,821.40, 470,312.30 and 187,860.79

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Solution

The fourth proportional to 340,821.40, 470,312.30 and 187,860.79 is: 259,236.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,821.40 : 470,312.30 = 187,860.79 : x
  2. Step 2: Convert to fraction form
    340,821.40/470,312.30 = 187,860.79/x
  3. Step 3: Cross multiply
    340,821.40x = 470,312.30 × 187,860.79
  4. Step 4: Simplify right side
    340,821.40x = 88,353,242,076.65
  5. Step 5: Solve for x
    x = 88,353,242,076.65/340,821.40
  6. Step 6: Final answer
    x = 259,236.20

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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.