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Finding the Fourth Proportional to 355,492.80, 533,530.80 and 343,828.80

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Solution

The fourth proportional to 355,492.80, 533,530.80 and 343,828.80 is: 516,025.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,492.80 : 533,530.80 = 343,828.80 : x
  2. Step 2: Convert to fraction form
    355,492.80/533,530.80 = 343,828.80/x
  3. Step 3: Cross multiply
    355,492.80x = 533,530.80 × 343,828.80
  4. Step 4: Simplify right side
    355,492.80x = 183,443,254,727.04
  5. Step 5: Solve for x
    x = 183,443,254,727.04/355,492.80
  6. Step 6: Final answer
    x = 516,025.23

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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.