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Finding the Fourth Proportional to 315,267.89, 435,066.05 and 172,030.32

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Solution

The fourth proportional to 315,267.89, 435,066.05 and 172,030.32 is: 237,399.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,267.89 : 435,066.05 = 172,030.32 : x
  2. Step 2: Convert to fraction form
    315,267.89/435,066.05 = 172,030.32/x
  3. Step 3: Cross multiply
    315,267.89x = 435,066.05 × 172,030.32
  4. Step 4: Simplify right side
    315,267.89x = 74,844,550,942.48
  5. Step 5: Solve for x
    x = 74,844,550,942.48/315,267.89
  6. Step 6: Final answer
    x = 237,399.86

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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.