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Finding the Fourth Proportional to 243,220.16, 364,812.24 and 85,450.16

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Solution

The fourth proportional to 243,220.16, 364,812.24 and 85,450.16 is: 128,168.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,220.16 : 364,812.24 = 85,450.16 : x
  2. Step 2: Convert to fraction form
    243,220.16/364,812.24 = 85,450.16/x
  3. Step 3: Cross multiply
    243,220.16x = 364,812.24 × 85,450.16
  4. Step 4: Simplify right side
    243,220.16x = 31,173,264,277.96
  5. Step 5: Solve for x
    x = 31,173,264,277.96/243,220.16
  6. Step 6: Final answer
    x = 128,168.92

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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.