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Finding the Fourth Proportional to 282,545.63, 389,913.11 and 155,229.42

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Solution

The fourth proportional to 282,545.63, 389,913.11 and 155,229.42 is: 214,216.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,545.63 : 389,913.11 = 155,229.42 : x
  2. Step 2: Convert to fraction form
    282,545.63/389,913.11 = 155,229.42/x
  3. Step 3: Cross multiply
    282,545.63x = 389,913.11 × 155,229.42
  4. Step 4: Simplify right side
    282,545.63x = 60,525,986,303.77
  5. Step 5: Solve for x
    x = 60,525,986,303.77/282,545.63
  6. Step 6: Final answer
    x = 214,216.68

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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.