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Finding the Fourth Proportional to 245,499.54, 368,246.86 and 85,575.16

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Solution

The fourth proportional to 245,499.54, 368,246.86 and 85,575.16 is: 128,361.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,499.54 : 368,246.86 = 85,575.16 : x
  2. Step 2: Convert to fraction form
    245,499.54/368,246.86 = 85,575.16/x
  3. Step 3: Cross multiply
    245,499.54x = 368,246.86 × 85,575.16
  4. Step 4: Simplify right side
    245,499.54x = 31,512,784,210.37
  5. Step 5: Solve for x
    x = 31,512,784,210.37/245,499.54
  6. Step 6: Final answer
    x = 128,361.89

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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.