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Finding the Fourth Proportional to 355,441.60, 532,384.80 and 214,955.20

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Solution

The fourth proportional to 355,441.60, 532,384.80 and 214,955.20 is: 321,962.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,441.60 : 532,384.80 = 214,955.20 : x
  2. Step 2: Convert to fraction form
    355,441.60/532,384.80 = 214,955.20/x
  3. Step 3: Cross multiply
    355,441.60x = 532,384.80 × 214,955.20
  4. Step 4: Simplify right side
    355,441.60x = 114,438,881,160.96
  5. Step 5: Solve for x
    x = 114,438,881,160.96/355,441.60
  6. Step 6: Final answer
    x = 321,962.54

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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.