Home / 285,079,505.40-393,409,717.53-154,699,313.40

Finding the Fourth Proportional to 285,079,505.40, 393,409,717.53 and 154,699,313.40

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Solution

The fourth proportional to 285,079,505.40, 393,409,717.53 and 154,699,313.40 is: 213,485,052.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,079,505.40 : 393,409,717.53 = 154,699,313.40 : x
  2. Step 2: Convert to fraction form
    285,079,505.40/393,409,717.53 = 154,699,313.40/x
  3. Step 3: Cross multiply
    285,079,505.40x = 393,409,717.53 × 154,699,313.40
  4. Step 4: Simplify right side
    285,079,505.40x = 60,860,213,186,778,944
  5. Step 5: Solve for x
    x = 60,860,213,186,778,944/285,079,505.40
  6. Step 6: Final answer
    x = 213,485,052.53

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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.