Home / 310,740.48-428,844.30-189,904.88

Finding the Fourth Proportional to 310,740.48, 428,844.30 and 189,904.88

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Solution

The fourth proportional to 310,740.48, 428,844.30 and 189,904.88 is: 262,082.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,740.48 : 428,844.30 = 189,904.88 : x
  2. Step 2: Convert to fraction form
    310,740.48/428,844.30 = 189,904.88/x
  3. Step 3: Cross multiply
    310,740.48x = 428,844.30 × 189,904.88
  4. Step 4: Simplify right side
    310,740.48x = 81,439,625,330.18
  5. Step 5: Solve for x
    x = 81,439,625,330.18/310,740.48
  6. Step 6: Final answer
    x = 262,082.45

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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.