Home / 310,090.31-427,898.35-187,628.30

Finding the Fourth Proportional to 310,090.31, 427,898.35 and 187,628.30

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Solution

The fourth proportional to 310,090.31, 427,898.35 and 187,628.30 is: 258,911.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,090.31 : 427,898.35 = 187,628.30 : x
  2. Step 2: Convert to fraction form
    310,090.31/427,898.35 = 187,628.30/x
  3. Step 3: Cross multiply
    310,090.31x = 427,898.35 × 187,628.30
  4. Step 4: Simplify right side
    310,090.31x = 80,285,839,983.31
  5. Step 5: Solve for x
    x = 80,285,839,983.31/310,090.31
  6. Step 6: Final answer
    x = 258,911.15

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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.