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Finding the Fourth Proportional to 225,187.98, 310,128.39 and 187,117.98

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Solution

The fourth proportional to 225,187.98, 310,128.39 and 187,117.98 is: 257,698.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,187.98 : 310,128.39 = 187,117.98 : x
  2. Step 2: Convert to fraction form
    225,187.98/310,128.39 = 187,117.98/x
  3. Step 3: Cross multiply
    225,187.98x = 310,128.39 × 187,117.98
  4. Step 4: Simplify right side
    225,187.98x = 58,030,597,877.45
  5. Step 5: Solve for x
    x = 58,030,597,877.45/225,187.98
  6. Step 6: Final answer
    x = 257,698.47

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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.