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Finding the Fourth Proportional to 199,590.80, 299,465.40 and 81,270.80

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Solution

The fourth proportional to 199,590.80, 299,465.40 and 81,270.80 is: 121,938.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,590.80 : 299,465.40 = 81,270.80 : x
  2. Step 2: Convert to fraction form
    199,590.80/299,465.40 = 81,270.80/x
  3. Step 3: Cross multiply
    199,590.80x = 299,465.40 × 81,270.80
  4. Step 4: Simplify right side
    199,590.80x = 24,337,792,630.32
  5. Step 5: Solve for x
    x = 24,337,792,630.32/199,590.80
  6. Step 6: Final answer
    x = 121,938.45

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1.5x scale

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.