Home / 229,268.25-316,419.35-128,666.25

Finding the Fourth Proportional to 229,268.25, 316,419.35 and 128,666.25

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Solution

The fourth proportional to 229,268.25, 316,419.35 and 128,666.25 is: 177,575.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,268.25 : 316,419.35 = 128,666.25 : x
  2. Step 2: Convert to fraction form
    229,268.25/316,419.35 = 128,666.25/x
  3. Step 3: Cross multiply
    229,268.25x = 316,419.35 × 128,666.25
  4. Step 4: Simplify right side
    229,268.25x = 40,712,490,548.61
  5. Step 5: Solve for x
    x = 40,712,490,548.61/229,268.25
  6. Step 6: Final answer
    x = 177,575.79

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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.