Home / 278,988.70-384,999.86-151,667.50

Finding the Fourth Proportional to 278,988.70, 384,999.86 and 151,667.50

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Solution

The fourth proportional to 278,988.70, 384,999.86 and 151,667.50 is: 209,298.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,988.70 : 384,999.86 = 151,667.50 : x
  2. Step 2: Convert to fraction form
    278,988.70/384,999.86 = 151,667.50/x
  3. Step 3: Cross multiply
    278,988.70x = 384,999.86 × 151,667.50
  4. Step 4: Simplify right side
    278,988.70x = 58,391,966,266.55
  5. Step 5: Solve for x
    x = 58,391,966,266.55/278,988.70
  6. Step 6: Final answer
    x = 209,298.68

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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.