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Finding the Fourth Proportional to 339,802.80, 509,574.60 and 103,066.80

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Solution

The fourth proportional to 339,802.80, 509,574.60 and 103,066.80 is: 154,560.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,802.80 : 509,574.60 = 103,066.80 : x
  2. Step 2: Convert to fraction form
    339,802.80/509,574.60 = 103,066.80/x
  3. Step 3: Cross multiply
    339,802.80x = 509,574.60 × 103,066.80
  4. Step 4: Simplify right side
    339,802.80x = 52,520,223,383.28
  5. Step 5: Solve for x
    x = 52,520,223,383.28/339,802.80
  6. Step 6: Final answer
    x = 154,560.89

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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.