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Finding the Fourth Proportional to 399,604.68, 596,492.06 and 349,158.78

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Solution

The fourth proportional to 399,604.68, 596,492.06 and 349,158.78 is: 521,191.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,604.68 : 596,492.06 = 349,158.78 : x
  2. Step 2: Convert to fraction form
    399,604.68/596,492.06 = 349,158.78/x
  3. Step 3: Cross multiply
    399,604.68x = 596,492.06 × 349,158.78
  4. Step 4: Simplify right side
    399,604.68x = 208,270,439,949.29
  5. Step 5: Solve for x
    x = 208,270,439,949.29/399,604.68
  6. Step 6: Final answer
    x = 521,191.19

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.