Home / 353,123.60-528,994.20-212,464.40

Finding the Fourth Proportional to 353,123.60, 528,994.20 and 212,464.40

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Solution

The fourth proportional to 353,123.60, 528,994.20 and 212,464.40 is: 318,280.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,123.60 : 528,994.20 = 212,464.40 : x
  2. Step 2: Convert to fraction form
    353,123.60/528,994.20 = 212,464.40/x
  3. Step 3: Cross multiply
    353,123.60x = 528,994.20 × 212,464.40
  4. Step 4: Simplify right side
    353,123.60x = 112,392,435,306.48
  5. Step 5: Solve for x
    x = 112,392,435,306.48/353,123.60
  6. Step 6: Final answer
    x = 318,280.72

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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.