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Finding the Fourth Proportional to 346,426.60, 519,639.90 and 228,231.40

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Solution

The fourth proportional to 346,426.60, 519,639.90 and 228,231.40 is: 342,347.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,426.60 : 519,639.90 = 228,231.40 : x
  2. Step 2: Convert to fraction form
    346,426.60/519,639.90 = 228,231.40/x
  3. Step 3: Cross multiply
    346,426.60x = 519,639.90 × 228,231.40
  4. Step 4: Simplify right side
    346,426.60x = 118,598,141,872.86
  5. Step 5: Solve for x
    x = 118,598,141,872.86/346,426.60
  6. Step 6: Final answer
    x = 342,347.10

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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.