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Finding the Fourth Proportional to 282,338.76, 389,628.16 and 155,022.52

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Solution

The fourth proportional to 282,338.76, 389,628.16 and 155,022.52 is: 213,931.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,338.76 : 389,628.16 = 155,022.52 : x
  2. Step 2: Convert to fraction form
    282,338.76/389,628.16 = 155,022.52/x
  3. Step 3: Cross multiply
    282,338.76x = 389,628.16 × 155,022.52
  4. Step 4: Simplify right side
    282,338.76x = 60,401,139,226.16
  5. Step 5: Solve for x
    x = 60,401,139,226.16/282,338.76
  6. Step 6: Final answer
    x = 213,931.45

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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.