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Finding the Fourth Proportional to 355,225.80, 532,838.70 and 214,912.20

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Solution

The fourth proportional to 355,225.80, 532,838.70 and 214,912.20 is: 322,368.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,225.80 : 532,838.70 = 214,912.20 : x
  2. Step 2: Convert to fraction form
    355,225.80/532,838.70 = 214,912.20/x
  3. Step 3: Cross multiply
    355,225.80x = 532,838.70 × 214,912.20
  4. Step 4: Simplify right side
    355,225.80x = 114,513,537,262.14
  5. Step 5: Solve for x
    x = 114,513,537,262.14/355,225.80
  6. Step 6: Final answer
    x = 322,368.30

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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.