Home / 426,220.34-638,822.09-198,208.16

Finding the Fourth Proportional to 426,220.34, 638,822.09 and 198,208.16

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Solution

The fourth proportional to 426,220.34, 638,822.09 and 198,208.16 is: 297,075.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,220.34 : 638,822.09 = 198,208.16 : x
  2. Step 2: Convert to fraction form
    426,220.34/638,822.09 = 198,208.16/x
  3. Step 3: Cross multiply
    426,220.34x = 638,822.09 × 198,208.16
  4. Step 4: Simplify right side
    426,220.34x = 126,619,746,841.10
  5. Step 5: Solve for x
    x = 126,619,746,841.10/426,220.34
  6. Step 6: Final answer
    x = 297,075.80

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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.