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Finding the Fourth Proportional to 222,515.04, 307,075.60 and 121,913.04

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Solution

The fourth proportional to 222,515.04, 307,075.60 and 121,913.04 is: 168,242.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,515.04 : 307,075.60 = 121,913.04 : x
  2. Step 2: Convert to fraction form
    222,515.04/307,075.60 = 121,913.04/x
  3. Step 3: Cross multiply
    222,515.04x = 307,075.60 × 121,913.04
  4. Step 4: Simplify right side
    222,515.04x = 37,436,519,905.82
  5. Step 5: Solve for x
    x = 37,436,519,905.82/222,515.04
  6. Step 6: Final answer
    x = 168,242.65

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1.5x scale

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.