Home / 291,948.40-437,890.20-81,607.60

Finding the Fourth Proportional to 291,948.40, 437,890.20 and 81,607.60

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Solution

The fourth proportional to 291,948.40, 437,890.20 and 81,607.60 is: 122,402.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,948.40 : 437,890.20 = 81,607.60 : x
  2. Step 2: Convert to fraction form
    291,948.40/437,890.20 = 81,607.60/x
  3. Step 3: Cross multiply
    291,948.40x = 437,890.20 × 81,607.60
  4. Step 4: Simplify right side
    291,948.40x = 35,735,168,285.52
  5. Step 5: Solve for x
    x = 35,735,168,285.52/291,948.40
  6. Step 6: Final answer
    x = 122,402.34

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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.