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Finding the Fourth Proportional to 368,898.66, 509,081.88 and 207,756.45

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Solution

The fourth proportional to 368,898.66, 509,081.88 and 207,756.45 is: 286,704.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,898.66 : 509,081.88 = 207,756.45 : x
  2. Step 2: Convert to fraction form
    368,898.66/509,081.88 = 207,756.45/x
  3. Step 3: Cross multiply
    368,898.66x = 509,081.88 × 207,756.45
  4. Step 4: Simplify right side
    368,898.66x = 105,765,044,148.13
  5. Step 5: Solve for x
    x = 105,765,044,148.13/368,898.66
  6. Step 6: Final answer
    x = 286,704.87

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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.