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Finding the Fourth Proportional to 288,328.40, 432,492.60 and 271,998.80

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Solution

The fourth proportional to 288,328.40, 432,492.60 and 271,998.80 is: 407,998.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,328.40 : 432,492.60 = 271,998.80 : x
  2. Step 2: Convert to fraction form
    288,328.40/432,492.60 = 271,998.80/x
  3. Step 3: Cross multiply
    288,328.40x = 432,492.60 × 271,998.80
  4. Step 4: Simplify right side
    288,328.40x = 117,637,468,208.88
  5. Step 5: Solve for x
    x = 117,637,468,208.88/288,328.40
  6. Step 6: Final answer
    x = 407,998.20

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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.