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Finding the Fourth Proportional to 661,699.80, 992,957.98 and 306,647.64

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Solution

The fourth proportional to 661,699.80, 992,957.98 and 306,647.64 is: 460,160.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,699.80 : 992,957.98 = 306,647.64 : x
  2. Step 2: Convert to fraction form
    661,699.80/992,957.98 = 306,647.64/x
  3. Step 3: Cross multiply
    661,699.80x = 992,957.98 × 306,647.64
  4. Step 4: Simplify right side
    661,699.80x = 304,488,221,186.17
  5. Step 5: Solve for x
    x = 304,488,221,186.17/661,699.80
  6. Step 6: Final answer
    x = 460,160.67

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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.