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Finding the Fourth Proportional to 315,647.20, 473,537.04 and 91,007.20

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Solution

The fourth proportional to 315,647.20, 473,537.04 and 91,007.20 is: 136,529.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,647.20 : 473,537.04 = 91,007.20 : x
  2. Step 2: Convert to fraction form
    315,647.20/473,537.04 = 91,007.20/x
  3. Step 3: Cross multiply
    315,647.20x = 473,537.04 × 91,007.20
  4. Step 4: Simplify right side
    315,647.20x = 43,095,280,106.69
  5. Step 5: Solve for x
    x = 43,095,280,106.69/315,647.20
  6. Step 6: Final answer
    x = 136,529.90

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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.