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Finding the Fourth Proportional to 255,998.40, 353,410.62 and 187,010.40

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Solution

The fourth proportional to 255,998.40, 353,410.62 and 187,010.40 is: 258,171.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,998.40 : 353,410.62 = 187,010.40 : x
  2. Step 2: Convert to fraction form
    255,998.40/353,410.62 = 187,010.40/x
  3. Step 3: Cross multiply
    255,998.40x = 353,410.62 × 187,010.40
  4. Step 4: Simplify right side
    255,998.40x = 66,091,461,410.45
  5. Step 5: Solve for x
    x = 66,091,461,410.45/255,998.40
  6. Step 6: Final answer
    x = 258,171.38

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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.