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Finding the Fourth Proportional to 369,756.36, 510,263.82 and 199,990.49

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Solution

The fourth proportional to 369,756.36, 510,263.82 and 199,990.49 is: 275,986.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,756.36 : 510,263.82 = 199,990.49 : x
  2. Step 2: Convert to fraction form
    369,756.36/510,263.82 = 199,990.49/x
  3. Step 3: Cross multiply
    369,756.36x = 510,263.82 × 199,990.49
  4. Step 4: Simplify right side
    369,756.36x = 102,047,908,839.75
  5. Step 5: Solve for x
    x = 102,047,908,839.75/369,756.36
  6. Step 6: Final answer
    x = 275,986.89

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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.