Home / 290,005,639.90-400,216,444.08-178,560,773.66

Finding the Fourth Proportional to 290,005,639.90, 400,216,444.08 and 178,560,773.66

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Solution

The fourth proportional to 290,005,639.90, 400,216,444.08 and 178,560,773.66 is: 246,419,200.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,005,639.90 : 400,216,444.08 = 178,560,773.66 : x
  2. Step 2: Convert to fraction form
    290,005,639.90/400,216,444.08 = 178,560,773.66/x
  3. Step 3: Cross multiply
    290,005,639.90x = 400,216,444.08 × 178,560,773.66
  4. Step 4: Simplify right side
    290,005,639.90x = 71,462,957,885,047,448
  5. Step 5: Solve for x
    x = 71,462,957,885,047,448/290,005,639.90
  6. Step 6: Final answer
    x = 246,419,200.36

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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.