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Finding the Fourth Proportional to 223,280.80, 308,130.99 and 121,308.28

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Solution

The fourth proportional to 223,280.80, 308,130.99 and 121,308.28 is: 167,407.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,280.80 : 308,130.99 = 121,308.28 : x
  2. Step 2: Convert to fraction form
    223,280.80/308,130.99 = 121,308.28/x
  3. Step 3: Cross multiply
    223,280.80x = 308,130.99 × 121,308.28
  4. Step 4: Simplify right side
    223,280.80x = 37,378,839,186.36
  5. Step 5: Solve for x
    x = 37,378,839,186.36/223,280.80
  6. Step 6: Final answer
    x = 167,407.32

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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.