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Finding the Fourth Proportional to 307,984.80, 461,897 and 130,400.40

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Solution

The fourth proportional to 307,984.80, 461,897 and 130,400.40 is: 195,566.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,984.80 : 461,897 = 130,400.40 : x
  2. Step 2: Convert to fraction form
    307,984.80/461,897 = 130,400.40/x
  3. Step 3: Cross multiply
    307,984.80x = 461,897 × 130,400.40
  4. Step 4: Simplify right side
    307,984.80x = 60,231,553,558.80
  5. Step 5: Solve for x
    x = 60,231,553,558.80/307,984.80
  6. Step 6: Final answer
    x = 195,566.64

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1.5x scale

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.