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Finding the Fourth Proportional to 307,458.40, 424,354.80 and 180,243.04

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Solution

The fourth proportional to 307,458.40, 424,354.80 and 180,243.04 is: 248,771.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,458.40 : 424,354.80 = 180,243.04 : x
  2. Step 2: Convert to fraction form
    307,458.40/424,354.80 = 180,243.04/x
  3. Step 3: Cross multiply
    307,458.40x = 424,354.80 × 180,243.04
  4. Step 4: Simplify right side
    307,458.40x = 76,486,999,190.59
  5. Step 5: Solve for x
    x = 76,486,999,190.59/307,458.40
  6. Step 6: Final answer
    x = 248,771.86

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1.5x scale

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.