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Finding the Fourth Proportional to 352,699.20, 528,271.20 and 306,043.20

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Solution

The fourth proportional to 352,699.20, 528,271.20 and 306,043.20 is: 458,390.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,699.20 : 528,271.20 = 306,043.20 : x
  2. Step 2: Convert to fraction form
    352,699.20/528,271.20 = 306,043.20/x
  3. Step 3: Cross multiply
    352,699.20x = 528,271.20 × 306,043.20
  4. Step 4: Simplify right side
    352,699.20x = 161,673,808,515.84
  5. Step 5: Solve for x
    x = 161,673,808,515.84/352,699.20
  6. Step 6: Final answer
    x = 458,390.06

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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.