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Finding the Fourth Proportional to 243,090.20, 364,851.30 and 143,125.40

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Solution

The fourth proportional to 243,090.20, 364,851.30 and 143,125.40 is: 214,815.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,090.20 : 364,851.30 = 143,125.40 : x
  2. Step 2: Convert to fraction form
    243,090.20/364,851.30 = 143,125.40/x
  3. Step 3: Cross multiply
    243,090.20x = 364,851.30 × 143,125.40
  4. Step 4: Simplify right side
    243,090.20x = 52,219,488,253.02
  5. Step 5: Solve for x
    x = 52,219,488,253.02/243,090.20
  6. Step 6: Final answer
    x = 214,815.28

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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.