Home / 386,953.04-534,195.60-300,719.36

Finding the Fourth Proportional to 386,953.04, 534,195.60 and 300,719.36

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Solution

The fourth proportional to 386,953.04, 534,195.60 and 300,719.36 is: 415,148.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,953.04 : 534,195.60 = 300,719.36 : x
  2. Step 2: Convert to fraction form
    386,953.04/534,195.60 = 300,719.36/x
  3. Step 3: Cross multiply
    386,953.04x = 534,195.60 × 300,719.36
  4. Step 4: Simplify right side
    386,953.04x = 160,642,958,946.82
  5. Step 5: Solve for x
    x = 160,642,958,946.82/386,953.04
  6. Step 6: Final answer
    x = 415,148.46

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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.