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Finding the Fourth Proportional to 210,308.79, 290,215.15 and 114,797.03

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Solution

The fourth proportional to 210,308.79, 290,215.15 and 114,797.03 is: 158,413.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,308.79 : 290,215.15 = 114,797.03 : x
  2. Step 2: Convert to fraction form
    210,308.79/290,215.15 = 114,797.03/x
  3. Step 3: Cross multiply
    210,308.79x = 290,215.15 × 114,797.03
  4. Step 4: Simplify right side
    210,308.79x = 33,315,837,281.00
  5. Step 5: Solve for x
    x = 33,315,837,281.00/210,308.79
  6. Step 6: Final answer
    x = 158,413.91

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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.