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Finding the Fourth Proportional to 445,978.94, 615,451.34 and 242,029.90

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Solution

The fourth proportional to 445,978.94, 615,451.34 and 242,029.90 is: 334,001.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,978.94 : 615,451.34 = 242,029.90 : x
  2. Step 2: Convert to fraction form
    445,978.94/615,451.34 = 242,029.90/x
  3. Step 3: Cross multiply
    445,978.94x = 615,451.34 × 242,029.90
  4. Step 4: Simplify right side
    445,978.94x = 148,957,621,987.66
  5. Step 5: Solve for x
    x = 148,957,621,987.66/445,978.94
  6. Step 6: Final answer
    x = 334,001.47

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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.