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Finding the Fourth Proportional to 280,368.45, 386,894.94 and 159,498.36

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Solution

The fourth proportional to 280,368.45, 386,894.94 and 159,498.36 is: 220,100.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,368.45 : 386,894.94 = 159,498.36 : x
  2. Step 2: Convert to fraction form
    280,368.45/386,894.94 = 159,498.36/x
  3. Step 3: Cross multiply
    280,368.45x = 386,894.94 × 159,498.36
  4. Step 4: Simplify right side
    280,368.45x = 61,709,108,422.30
  5. Step 5: Solve for x
    x = 61,709,108,422.30/280,368.45
  6. Step 6: Final answer
    x = 220,100.04

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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.