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Finding the Fourth Proportional to 401,274.68, 553,829.40 and 304,797.87

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Solution

The fourth proportional to 401,274.68, 553,829.40 and 304,797.87 is: 420,674.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,274.68 : 553,829.40 = 304,797.87 : x
  2. Step 2: Convert to fraction form
    401,274.68/553,829.40 = 304,797.87/x
  3. Step 3: Cross multiply
    401,274.68x = 553,829.40 × 304,797.87
  4. Step 4: Simplify right side
    401,274.68x = 168,806,021,463.38
  5. Step 5: Solve for x
    x = 168,806,021,463.38/401,274.68
  6. Step 6: Final answer
    x = 420,674.50

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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.