Home / 285,079,581.12-393,409,822.40-154,699,389.12

Finding the Fourth Proportional to 285,079,581.12, 393,409,822.40 and 154,699,389.12

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Solution

The fourth proportional to 285,079,581.12, 393,409,822.40 and 154,699,389.12 is: 213,485,157.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,079,581.12 : 393,409,822.40 = 154,699,389.12 : x
  2. Step 2: Convert to fraction form
    285,079,581.12/393,409,822.40 = 154,699,389.12/x
  3. Step 3: Cross multiply
    285,079,581.12x = 393,409,822.40 × 154,699,389.12
  4. Step 4: Simplify right side
    285,079,581.12x = 60,860,259,199,087,688
  5. Step 5: Solve for x
    x = 60,860,259,199,087,688/285,079,581.12
  6. Step 6: Final answer
    x = 213,485,157.23

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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.