Home / 285,079,327.80-393,409,472.40-154,699,135.80

Finding the Fourth Proportional to 285,079,327.80, 393,409,472.40 and 154,699,135.80

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Solution

The fourth proportional to 285,079,327.80, 393,409,472.40 and 154,699,135.80 is: 213,484,807.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,079,327.80 : 393,409,472.40 = 154,699,135.80 : x
  2. Step 2: Convert to fraction form
    285,079,327.80/393,409,472.40 = 154,699,135.80/x
  3. Step 3: Cross multiply
    285,079,327.80x = 393,409,472.40 × 154,699,135.80
  4. Step 4: Simplify right side
    285,079,327.80x = 60,860,105,395,813,952
  5. Step 5: Solve for x
    x = 60,860,105,395,813,952/285,079,327.80
  6. Step 6: Final answer
    x = 213,484,807.42

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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.