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Finding the Fourth Proportional to 209,952,187.70, 314,928,281.55 and 190,804,565.30

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Solution

The fourth proportional to 209,952,187.70, 314,928,281.55 and 190,804,565.30 is: 286,206,847.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,952,187.70 : 314,928,281.55 = 190,804,565.30 : x
  2. Step 2: Convert to fraction form
    209,952,187.70/314,928,281.55 = 190,804,565.30/x
  3. Step 3: Cross multiply
    209,952,187.70x = 314,928,281.55 × 190,804,565.30
  4. Step 4: Simplify right side
    209,952,187.70x = 60,089,753,861,823,768
  5. Step 5: Solve for x
    x = 60,089,753,861,823,768/209,952,187.70
  6. Step 6: Final answer
    x = 286,206,847.95

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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.