Home / 285,119,725.75-393,465,221.54-154,739,533.75

Finding the Fourth Proportional to 285,119,725.75, 393,465,221.54 and 154,739,533.75

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Solution

The fourth proportional to 285,119,725.75, 393,465,221.54 and 154,739,533.75 is: 213,540,556.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,119,725.75 : 393,465,221.54 = 154,739,533.75 : x
  2. Step 2: Convert to fraction form
    285,119,725.75/393,465,221.54 = 154,739,533.75/x
  3. Step 3: Cross multiply
    285,119,725.75x = 393,465,221.54 × 154,739,533.75
  4. Step 4: Simplify right side
    285,119,725.75x = 60,884,624,927,940,064
  5. Step 5: Solve for x
    x = 60,884,624,927,940,064/285,119,725.75
  6. Step 6: Final answer
    x = 213,540,556.58

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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.