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Finding the Fourth Proportional to 288,572.20, 432,858.30 and 235,428.10

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Solution

The fourth proportional to 288,572.20, 432,858.30 and 235,428.10 is: 353,142.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,572.20 : 432,858.30 = 235,428.10 : x
  2. Step 2: Convert to fraction form
    288,572.20/432,858.30 = 235,428.10/x
  3. Step 3: Cross multiply
    288,572.20x = 432,858.30 × 235,428.10
  4. Step 4: Simplify right side
    288,572.20x = 101,907,007,138.23
  5. Step 5: Solve for x
    x = 101,907,007,138.23/288,572.20
  6. Step 6: Final answer
    x = 353,142.15

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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.