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Finding the Fourth Proportional to 307,642.37, 424,545.66 and 171,674.87

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Solution

The fourth proportional to 307,642.37, 424,545.66 and 171,674.87 is: 236,910.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,642.37 : 424,545.66 = 171,674.87 : x
  2. Step 2: Convert to fraction form
    307,642.37/424,545.66 = 171,674.87/x
  3. Step 3: Cross multiply
    307,642.37x = 424,545.66 × 171,674.87
  4. Step 4: Simplify right side
    307,642.37x = 72,883,818,866.84
  5. Step 5: Solve for x
    x = 72,883,818,866.84/307,642.37
  6. Step 6: Final answer
    x = 236,910.87

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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.