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Finding the Fourth Proportional to 280,264.84, 386,763.35 and 159,405.98

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Solution

The fourth proportional to 280,264.84, 386,763.35 and 159,405.98 is: 219,979.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,264.84 : 386,763.35 = 159,405.98 : x
  2. Step 2: Convert to fraction form
    280,264.84/386,763.35 = 159,405.98/x
  3. Step 3: Cross multiply
    280,264.84x = 386,763.35 × 159,405.98
  4. Step 4: Simplify right side
    280,264.84x = 61,652,388,103.99
  5. Step 5: Solve for x
    x = 61,652,388,103.99/280,264.84
  6. Step 6: Final answer
    x = 219,979.03

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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.