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Finding the Fourth Proportional to 243,073.24, 364,609.32 and 85,346.80

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Solution

The fourth proportional to 243,073.24, 364,609.32 and 85,346.80 is: 128,020.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,073.24 : 364,609.32 = 85,346.80 : x
  2. Step 2: Convert to fraction form
    243,073.24/364,609.32 = 85,346.80/x
  3. Step 3: Cross multiply
    243,073.24x = 364,609.32 × 85,346.80
  4. Step 4: Simplify right side
    243,073.24x = 31,118,238,712.18
  5. Step 5: Solve for x
    x = 31,118,238,712.18/243,073.24
  6. Step 6: Final answer
    x = 128,020.01

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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.