Home / 353,115.10-528,981.45-212,455.90

Finding the Fourth Proportional to 353,115.10, 528,981.45 and 212,455.90

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Solution

The fourth proportional to 353,115.10, 528,981.45 and 212,455.90 is: 318,267.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,115.10 : 528,981.45 = 212,455.90 : x
  2. Step 2: Convert to fraction form
    353,115.10/528,981.45 = 212,455.90/x
  3. Step 3: Cross multiply
    353,115.10x = 528,981.45 × 212,455.90
  4. Step 4: Simplify right side
    353,115.10x = 112,385,230,043.06
  5. Step 5: Solve for x
    x = 112,385,230,043.06/353,115.10
  6. Step 6: Final answer
    x = 318,267.98

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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.