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Finding the Fourth Proportional to 368,899.38, 509,079.89 and 207,754.39

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Solution

The fourth proportional to 368,899.38, 509,079.89 and 207,754.39 is: 286,700.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,899.38 : 509,079.89 = 207,754.39 : x
  2. Step 2: Convert to fraction form
    368,899.38/509,079.89 = 207,754.39/x
  3. Step 3: Cross multiply
    368,899.38x = 509,079.89 × 207,754.39
  4. Step 4: Simplify right side
    368,899.38x = 105,763,579,131.76
  5. Step 5: Solve for x
    x = 105,763,579,131.76/368,899.38
  6. Step 6: Final answer
    x = 286,700.34

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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.