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Finding the Fourth Proportional to 355,261.40, 532,892.10 and 353,187.80

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Solution

The fourth proportional to 355,261.40, 532,892.10 and 353,187.80 is: 529,781.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,261.40 : 532,892.10 = 353,187.80 : x
  2. Step 2: Convert to fraction form
    355,261.40/532,892.10 = 353,187.80/x
  3. Step 3: Cross multiply
    355,261.40x = 532,892.10 × 353,187.80
  4. Step 4: Simplify right side
    355,261.40x = 188,210,988,436.38
  5. Step 5: Solve for x
    x = 188,210,988,436.38/355,261.40
  6. Step 6: Final answer
    x = 529,781.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.