Home / 280,187,268.30-420,280,902.45-178,402,538.70

Finding the Fourth Proportional to 280,187,268.30, 420,280,902.45 and 178,402,538.70

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Solution

The fourth proportional to 280,187,268.30, 420,280,902.45 and 178,402,538.70 is: 267,603,808.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,187,268.30 : 420,280,902.45 = 178,402,538.70 : x
  2. Step 2: Convert to fraction form
    280,187,268.30/420,280,902.45 = 178,402,538.70/x
  3. Step 3: Cross multiply
    280,187,268.30x = 420,280,902.45 × 178,402,538.70
  4. Step 4: Simplify right side
    280,187,268.30x = 74,979,179,964,207,040
  5. Step 5: Solve for x
    x = 74,979,179,964,207,040/280,187,268.30
  6. Step 6: Final answer
    x = 267,603,808.05

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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.