Home / 278,667.84-384,511.68-165,518.40

Finding the Fourth Proportional to 278,667.84, 384,511.68 and 165,518.40

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Solution

The fourth proportional to 278,667.84, 384,511.68 and 165,518.40 is: 228,385.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,667.84 : 384,511.68 = 165,518.40 : x
  2. Step 2: Convert to fraction form
    278,667.84/384,511.68 = 165,518.40/x
  3. Step 3: Cross multiply
    278,667.84x = 384,511.68 × 165,518.40
  4. Step 4: Simplify right side
    278,667.84x = 63,643,758,054.91
  5. Step 5: Solve for x
    x = 63,643,758,054.91/278,667.84
  6. Step 6: Final answer
    x = 228,385.73

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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.