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Finding the Fourth Proportional to 286,267.80, 429,056.10 and 145,954.20

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Solution

The fourth proportional to 286,267.80, 429,056.10 and 145,954.20 is: 218,755.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,267.80 : 429,056.10 = 145,954.20 : x
  2. Step 2: Convert to fraction form
    286,267.80/429,056.10 = 145,954.20/x
  3. Step 3: Cross multiply
    286,267.80x = 429,056.10 × 145,954.20
  4. Step 4: Simplify right side
    286,267.80x = 62,622,539,830.62
  5. Step 5: Solve for x
    x = 62,622,539,830.62/286,267.80
  6. Step 6: Final answer
    x = 218,755.10

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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.