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Finding the Fourth Proportional to 288,200.40, 432,300.60 and 253,208.40

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Solution

The fourth proportional to 288,200.40, 432,300.60 and 253,208.40 is: 379,812.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,200.40 : 432,300.60 = 253,208.40 : x
  2. Step 2: Convert to fraction form
    288,200.40/432,300.60 = 253,208.40/x
  3. Step 3: Cross multiply
    288,200.40x = 432,300.60 × 253,208.40
  4. Step 4: Simplify right side
    288,200.40x = 109,462,143,245.04
  5. Step 5: Solve for x
    x = 109,462,143,245.04/288,200.40
  6. Step 6: Final answer
    x = 379,812.60

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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.