Home / 426,222.34-638,825.08-198,210.16

Finding the Fourth Proportional to 426,222.34, 638,825.08 and 198,210.16

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Solution

The fourth proportional to 426,222.34, 638,825.08 and 198,210.16 is: 297,078.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,222.34 : 638,825.08 = 198,210.16 : x
  2. Step 2: Convert to fraction form
    426,222.34/638,825.08 = 198,210.16/x
  3. Step 3: Cross multiply
    426,222.34x = 638,825.08 × 198,210.16
  4. Step 4: Simplify right side
    426,222.34x = 126,621,621,318.81
  5. Step 5: Solve for x
    x = 126,621,621,318.81/426,222.34
  6. Step 6: Final answer
    x = 297,078.80

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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.