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Finding the Fourth Proportional to 665,007.15, 997,650.93 and 215,693.07

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Solution

The fourth proportional to 665,007.15, 997,650.93 and 215,693.07 is: 323,585.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,007.15 : 997,650.93 = 215,693.07 : x
  2. Step 2: Convert to fraction form
    665,007.15/997,650.93 = 215,693.07/x
  3. Step 3: Cross multiply
    665,007.15x = 997,650.93 × 215,693.07
  4. Step 4: Simplify right side
    665,007.15x = 215,186,391,880.06
  5. Step 5: Solve for x
    x = 215,186,391,880.06/665,007.15
  6. Step 6: Final answer
    x = 323,585.08

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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.