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Finding the Fourth Proportional to 352,097.20, 528,145.80 and 321,684.40

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Solution

The fourth proportional to 352,097.20, 528,145.80 and 321,684.40 is: 482,526.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,097.20 : 528,145.80 = 321,684.40 : x
  2. Step 2: Convert to fraction form
    352,097.20/528,145.80 = 321,684.40/x
  3. Step 3: Cross multiply
    352,097.20x = 528,145.80 × 321,684.40
  4. Step 4: Simplify right side
    352,097.20x = 169,896,264,785.52
  5. Step 5: Solve for x
    x = 169,896,264,785.52/352,097.20
  6. Step 6: Final answer
    x = 482,526.60

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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.