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Finding the Fourth Proportional to 284,685.20, 427,160.64 and 126,897.20

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Solution

The fourth proportional to 284,685.20, 427,160.64 and 126,897.20 is: 190,405.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,685.20 : 427,160.64 = 126,897.20 : x
  2. Step 2: Convert to fraction form
    284,685.20/427,160.64 = 126,897.20/x
  3. Step 3: Cross multiply
    284,685.20x = 427,160.64 × 126,897.20
  4. Step 4: Simplify right side
    284,685.20x = 54,205,489,166.21
  5. Step 5: Solve for x
    x = 54,205,489,166.21/284,685.20
  6. Step 6: Final answer
    x = 190,405.01

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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.