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Finding the Fourth Proportional to 316,808.13, 475,172.55 and 103,558.20

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Solution

The fourth proportional to 316,808.13, 475,172.55 and 103,558.20 is: 155,324.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,808.13 : 475,172.55 = 103,558.20 : x
  2. Step 2: Convert to fraction form
    316,808.13/475,172.55 = 103,558.20/x
  3. Step 3: Cross multiply
    316,808.13x = 475,172.55 × 103,558.20
  4. Step 4: Simplify right side
    316,808.13x = 49,208,013,967.41
  5. Step 5: Solve for x
    x = 49,208,013,967.41/316,808.13
  6. Step 6: Final answer
    x = 155,324.34

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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.