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Finding the Fourth Proportional to 368,585.70, 508,664.64 and 207,451.20

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Solution

The fourth proportional to 368,585.70, 508,664.64 and 207,451.20 is: 286,291.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,585.70 : 508,664.64 = 207,451.20 : x
  2. Step 2: Convert to fraction form
    368,585.70/508,664.64 = 207,451.20/x
  3. Step 3: Cross multiply
    368,585.70x = 508,664.64 × 207,451.20
  4. Step 4: Simplify right side
    368,585.70x = 105,523,089,965.57
  5. Step 5: Solve for x
    x = 105,523,089,965.57/368,585.70
  6. Step 6: Final answer
    x = 286,291.87

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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.