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Finding the Fourth Proportional to 310,062.77, 427,860.45 and 187,600.76

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Solution

The fourth proportional to 310,062.77, 427,860.45 and 187,600.76 is: 258,873.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,062.77 : 427,860.45 = 187,600.76 : x
  2. Step 2: Convert to fraction form
    310,062.77/427,860.45 = 187,600.76/x
  3. Step 3: Cross multiply
    310,062.77x = 427,860.45 × 187,600.76
  4. Step 4: Simplify right side
    310,062.77x = 80,266,943,454.64
  5. Step 5: Solve for x
    x = 80,266,943,454.64/310,062.77
  6. Step 6: Final answer
    x = 258,873.21

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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.