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Finding the Fourth Proportional to 307,405, 424,218.90 and 173,273.80

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Solution

The fourth proportional to 307,405, 424,218.90 and 173,273.80 is: 239,117.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,405 : 424,218.90 = 173,273.80 : x
  2. Step 2: Convert to fraction form
    307,405/424,218.90 = 173,273.80/x
  3. Step 3: Cross multiply
    307,405x = 424,218.90 × 173,273.80
  4. Step 4: Simplify right side
    307,405x = 73,506,020,834.82
  5. Step 5: Solve for x
    x = 73,506,020,834.82/307,405
  6. Step 6: Final answer
    x = 239,117.84

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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.