Home / 268,878,957.20-403,318,435.80-266,328,040.40

Finding the Fourth Proportional to 268,878,957.20, 403,318,435.80 and 266,328,040.40

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Solution

The fourth proportional to 268,878,957.20, 403,318,435.80 and 266,328,040.40 is: 399,492,060.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,878,957.20 : 403,318,435.80 = 266,328,040.40 : x
  2. Step 2: Convert to fraction form
    268,878,957.20/403,318,435.80 = 266,328,040.40/x
  3. Step 3: Cross multiply
    268,878,957.20x = 403,318,435.80 × 266,328,040.40
  4. Step 4: Simplify right side
    268,878,957.20x = 107,415,008,663,807,216
  5. Step 5: Solve for x
    x = 107,415,008,663,807,216/268,878,957.20
  6. Step 6: Final answer
    x = 399,492,060.60

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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.