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Finding the Fourth Proportional to 368,304.49, 508,265.45 and 217,401.49

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Solution

The fourth proportional to 368,304.49, 508,265.45 and 217,401.49 is: 300,017.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,304.49 : 508,265.45 = 217,401.49 : x
  2. Step 2: Convert to fraction form
    368,304.49/508,265.45 = 217,401.49/x
  3. Step 3: Cross multiply
    368,304.49x = 508,265.45 × 217,401.49
  4. Step 4: Simplify right side
    368,304.49x = 110,497,666,145.52
  5. Step 5: Solve for x
    x = 110,497,666,145.52/368,304.49
  6. Step 6: Final answer
    x = 300,017.16

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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.