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Finding the Fourth Proportional to 315,700.54, 435,770.57 and 251,287.93

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Solution

The fourth proportional to 315,700.54, 435,770.57 and 251,287.93 is: 346,859.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,700.54 : 435,770.57 = 251,287.93 : x
  2. Step 2: Convert to fraction form
    315,700.54/435,770.57 = 251,287.93/x
  3. Step 3: Cross multiply
    315,700.54x = 435,770.57 × 251,287.93
  4. Step 4: Simplify right side
    315,700.54x = 109,503,884,490.22
  5. Step 5: Solve for x
    x = 109,503,884,490.22/315,700.54
  6. Step 6: Final answer
    x = 346,859.98

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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.