Home / 257,016,258.53-385,517,030.31-72,783,298.95

Finding the Fourth Proportional to 257,016,258.53, 385,517,030.31 and 72,783,298.95

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Solution

The fourth proportional to 257,016,258.53, 385,517,030.31 and 72,783,298.95 is: 109,172,864.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,016,258.53 : 385,517,030.31 = 72,783,298.95 : x
  2. Step 2: Convert to fraction form
    257,016,258.53/385,517,030.31 = 72,783,298.95/x
  3. Step 3: Cross multiply
    257,016,258.53x = 385,517,030.31 × 72,783,298.95
  4. Step 4: Simplify right side
    257,016,258.53x = 28,059,201,265,923,256
  5. Step 5: Solve for x
    x = 28,059,201,265,923,256/257,016,258.53
  6. Step 6: Final answer
    x = 109,172,864.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.