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Finding the Fourth Proportional to 456,412.40, 684,035.40 and 219,244.40

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Solution

The fourth proportional to 456,412.40, 684,035.40 and 219,244.40 is: 328,586.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,412.40 : 684,035.40 = 219,244.40 : x
  2. Step 2: Convert to fraction form
    456,412.40/684,035.40 = 219,244.40/x
  3. Step 3: Cross multiply
    456,412.40x = 684,035.40 × 219,244.40
  4. Step 4: Simplify right side
    456,412.40x = 149,970,930,851.76
  5. Step 5: Solve for x
    x = 149,970,930,851.76/456,412.40
  6. Step 6: Final answer
    x = 328,586.45

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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.