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Finding the Fourth Proportional to 330,449, 456,018.02 and 187,208.70

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Solution

The fourth proportional to 330,449, 456,018.02 and 187,208.70 is: 258,347.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,449 : 456,018.02 = 187,208.70 : x
  2. Step 2: Convert to fraction form
    330,449/456,018.02 = 187,208.70/x
  3. Step 3: Cross multiply
    330,449x = 456,018.02 × 187,208.70
  4. Step 4: Simplify right side
    330,449x = 85,370,540,700.77
  5. Step 5: Solve for x
    x = 85,370,540,700.77/330,449
  6. Step 6: Final answer
    x = 258,347.10

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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.