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Finding the Fourth Proportional to 557,262.28, 769,015.20 and 302,615.28

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Solution

The fourth proportional to 557,262.28, 769,015.20 and 302,615.28 is: 417,605.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,262.28 : 769,015.20 = 302,615.28 : x
  2. Step 2: Convert to fraction form
    557,262.28/769,015.20 = 302,615.28/x
  3. Step 3: Cross multiply
    557,262.28x = 769,015.20 × 302,615.28
  4. Step 4: Simplify right side
    557,262.28x = 232,715,750,072.26
  5. Step 5: Solve for x
    x = 232,715,750,072.26/557,262.28
  6. Step 6: Final answer
    x = 417,605.42

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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.