Home / 278,700.68-384,608.04-151,378.40

Finding the Fourth Proportional to 278,700.68, 384,608.04 and 151,378.40

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Solution

The fourth proportional to 278,700.68, 384,608.04 and 151,378.40 is: 208,902.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,700.68 : 384,608.04 = 151,378.40 : x
  2. Step 2: Convert to fraction form
    278,700.68/384,608.04 = 151,378.40/x
  3. Step 3: Cross multiply
    278,700.68x = 384,608.04 × 151,378.40
  4. Step 4: Simplify right side
    278,700.68x = 58,221,349,722.34
  5. Step 5: Solve for x
    x = 58,221,349,722.34/278,700.68
  6. Step 6: Final answer
    x = 208,902.79

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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.