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Finding the Fourth Proportional to 403,274.28, 555,586.82 and 289,900.84

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Solution

The fourth proportional to 403,274.28, 555,586.82 and 289,900.84 is: 399,393.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,274.28 : 555,586.82 = 289,900.84 : x
  2. Step 2: Convert to fraction form
    403,274.28/555,586.82 = 289,900.84/x
  3. Step 3: Cross multiply
    403,274.28x = 555,586.82 × 289,900.84
  4. Step 4: Simplify right side
    403,274.28x = 161,065,085,810.93
  5. Step 5: Solve for x
    x = 161,065,085,810.93/403,274.28
  6. Step 6: Final answer
    x = 399,393.40

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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.