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Finding the Fourth Proportional to 280,099.86, 386,570.49 and 159,259.25

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Solution

The fourth proportional to 280,099.86, 386,570.49 and 159,259.25 is: 219,796.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,099.86 : 386,570.49 = 159,259.25 : x
  2. Step 2: Convert to fraction form
    280,099.86/386,570.49 = 159,259.25/x
  3. Step 3: Cross multiply
    280,099.86x = 386,570.49 × 159,259.25
  4. Step 4: Simplify right side
    280,099.86x = 61,564,925,513.24
  5. Step 5: Solve for x
    x = 61,564,925,513.24/280,099.86
  6. Step 6: Final answer
    x = 219,796.35

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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.