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Finding the Fourth Proportional to 312,118.11, 430,719.93 and 168,875.01

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Solution

The fourth proportional to 312,118.11, 430,719.93 and 168,875.01 is: 233,045.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,118.11 : 430,719.93 = 168,875.01 : x
  2. Step 2: Convert to fraction form
    312,118.11/430,719.93 = 168,875.01/x
  3. Step 3: Cross multiply
    312,118.11x = 430,719.93 × 168,875.01
  4. Step 4: Simplify right side
    312,118.11x = 72,737,832,485.95
  5. Step 5: Solve for x
    x = 72,737,832,485.95/312,118.11
  6. Step 6: Final answer
    x = 233,045.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.