Home / 278,421.78-384,222.30-151,097.40

Finding the Fourth Proportional to 278,421.78, 384,222.30 and 151,097.40

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Solution

The fourth proportional to 278,421.78, 384,222.30 and 151,097.40 is: 208,514.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,421.78 : 384,222.30 = 151,097.40 : x
  2. Step 2: Convert to fraction form
    278,421.78/384,222.30 = 151,097.40/x
  3. Step 3: Cross multiply
    278,421.78x = 384,222.30 × 151,097.40
  4. Step 4: Simplify right side
    278,421.78x = 58,054,990,552.02
  5. Step 5: Solve for x
    x = 58,054,990,552.02/278,421.78
  6. Step 6: Final answer
    x = 208,514.54

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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.