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Finding the Fourth Proportional to 280,054.94, 386,460.45 and 159,179.45

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Solution

The fourth proportional to 280,054.94, 386,460.45 and 159,179.45 is: 219,658.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,054.94 : 386,460.45 = 159,179.45 : x
  2. Step 2: Convert to fraction form
    280,054.94/386,460.45 = 159,179.45/x
  3. Step 3: Cross multiply
    280,054.94x = 386,460.45 × 159,179.45
  4. Step 4: Simplify right side
    280,054.94x = 61,516,559,945.45
  5. Step 5: Solve for x
    x = 61,516,559,945.45/280,054.94
  6. Step 6: Final answer
    x = 219,658.90

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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.