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Finding the Fourth Proportional to 218,633.04, 301,715.28 and 123,130.80

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Solution

The fourth proportional to 218,633.04, 301,715.28 and 123,130.80 is: 169,921.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,633.04 : 301,715.28 = 123,130.80 : x
  2. Step 2: Convert to fraction form
    218,633.04/301,715.28 = 123,130.80/x
  3. Step 3: Cross multiply
    218,633.04x = 301,715.28 × 123,130.80
  4. Step 4: Simplify right side
    218,633.04x = 37,150,443,798.62
  5. Step 5: Solve for x
    x = 37,150,443,798.62/218,633.04
  6. Step 6: Final answer
    x = 169,921.45

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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.