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Finding the Fourth Proportional to 351,971.16, 528,055.16 and 115,479.91

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Solution

The fourth proportional to 351,971.16, 528,055.16 and 115,479.91 is: 173,252.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,971.16 : 528,055.16 = 115,479.91 : x
  2. Step 2: Convert to fraction form
    351,971.16/528,055.16 = 115,479.91/x
  3. Step 3: Cross multiply
    351,971.16x = 528,055.16 × 115,479.91
  4. Step 4: Simplify right side
    351,971.16x = 60,979,762,351.84
  5. Step 5: Solve for x
    x = 60,979,762,351.84/351,971.16
  6. Step 6: Final answer
    x = 173,252.16

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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.