Home / 218,909.47-302,094.58-123,415.49

Finding the Fourth Proportional to 218,909.47, 302,094.58 and 123,415.49

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Solution

The fourth proportional to 218,909.47, 302,094.58 and 123,415.49 is: 170,313.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,909.47 : 302,094.58 = 123,415.49 : x
  2. Step 2: Convert to fraction form
    218,909.47/302,094.58 = 123,415.49/x
  3. Step 3: Cross multiply
    218,909.47x = 302,094.58 × 123,415.49
  4. Step 4: Simplify right side
    218,909.47x = 37,283,149,431.37
  5. Step 5: Solve for x
    x = 37,283,149,431.37/218,909.47
  6. Step 6: Final answer
    x = 170,313.09

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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.