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Finding the Fourth Proportional to 353,892.30, 529,801.65 and 312,420.30

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Solution

The fourth proportional to 353,892.30, 529,801.65 and 312,420.30 is: 467,715.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,892.30 : 529,801.65 = 312,420.30 : x
  2. Step 2: Convert to fraction form
    353,892.30/529,801.65 = 312,420.30/x
  3. Step 3: Cross multiply
    353,892.30x = 529,801.65 × 312,420.30
  4. Step 4: Simplify right side
    353,892.30x = 165,520,790,433.50
  5. Step 5: Solve for x
    x = 165,520,790,433.50/353,892.30
  6. Step 6: Final answer
    x = 467,715.15

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1.5x scale

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.