Home / 353,081.60-528,931.20-212,422.40

Finding the Fourth Proportional to 353,081.60, 528,931.20 and 212,422.40

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Solution

The fourth proportional to 353,081.60, 528,931.20 and 212,422.40 is: 318,217.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,081.60 : 528,931.20 = 212,422.40 : x
  2. Step 2: Convert to fraction form
    353,081.60/528,931.20 = 212,422.40/x
  3. Step 3: Cross multiply
    353,081.60x = 528,931.20 × 212,422.40
  4. Step 4: Simplify right side
    353,081.60x = 112,356,834,938.88
  5. Step 5: Solve for x
    x = 112,356,834,938.88/353,081.60
  6. Step 6: Final answer
    x = 318,217.76

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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.