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Finding the Fourth Proportional to 364,664.60, 546,737.70 and 139,938.20

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Solution

The fourth proportional to 364,664.60, 546,737.70 and 139,938.20 is: 209,807.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,664.60 : 546,737.70 = 139,938.20 : x
  2. Step 2: Convert to fraction form
    364,664.60/546,737.70 = 139,938.20/x
  3. Step 3: Cross multiply
    364,664.60x = 546,737.70 × 139,938.20
  4. Step 4: Simplify right side
    364,664.60x = 76,509,489,610.14
  5. Step 5: Solve for x
    x = 76,509,489,610.14/364,664.60
  6. Step 6: Final answer
    x = 209,807.83

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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.