Home / 210,440.20-315,660.30-99,848.20

Finding the Fourth Proportional to 210,440.20, 315,660.30 and 99,848.20

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Solution

The fourth proportional to 210,440.20, 315,660.30 and 99,848.20 is: 149,772.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,440.20 : 315,660.30 = 99,848.20 : x
  2. Step 2: Convert to fraction form
    210,440.20/315,660.30 = 99,848.20/x
  3. Step 3: Cross multiply
    210,440.20x = 315,660.30 × 99,848.20
  4. Step 4: Simplify right side
    210,440.20x = 31,518,112,766.46
  5. Step 5: Solve for x
    x = 31,518,112,766.46/210,440.20
  6. Step 6: Final answer
    x = 149,772.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.