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Finding the Fourth Proportional to 286,887.80, 429,456.90 and 168,206.60

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Solution

The fourth proportional to 286,887.80, 429,456.90 and 168,206.60 is: 251,796.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,887.80 : 429,456.90 = 168,206.60 : x
  2. Step 2: Convert to fraction form
    286,887.80/429,456.90 = 168,206.60/x
  3. Step 3: Cross multiply
    286,887.80x = 429,456.90 × 168,206.60
  4. Step 4: Simplify right side
    286,887.80x = 72,237,484,995.54
  5. Step 5: Solve for x
    x = 72,237,484,995.54/286,887.80
  6. Step 6: Final answer
    x = 251,796.99

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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.