Home / 278,631.50-384,508.08-151,308

Finding the Fourth Proportional to 278,631.50, 384,508.08 and 151,308

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Solution

The fourth proportional to 278,631.50, 384,508.08 and 151,308 is: 208,803.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,631.50 : 384,508.08 = 151,308 : x
  2. Step 2: Convert to fraction form
    278,631.50/384,508.08 = 151,308/x
  3. Step 3: Cross multiply
    278,631.50x = 384,508.08 × 151,308
  4. Step 4: Simplify right side
    278,631.50x = 58,179,148,568.64
  5. Step 5: Solve for x
    x = 58,179,148,568.64/278,631.50
  6. Step 6: Final answer
    x = 208,803.20

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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.