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Finding the Fourth Proportional to 282,275.94, 389,528.55 and 154,953.66

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Solution

The fourth proportional to 282,275.94, 389,528.55 and 154,953.66 is: 213,829.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,275.94 : 389,528.55 = 154,953.66 : x
  2. Step 2: Convert to fraction form
    282,275.94/389,528.55 = 154,953.66/x
  3. Step 3: Cross multiply
    282,275.94x = 389,528.55 × 154,953.66
  4. Step 4: Simplify right side
    282,275.94x = 60,358,874,496.99
  5. Step 5: Solve for x
    x = 60,358,874,496.99/282,275.94
  6. Step 6: Final answer
    x = 213,829.33

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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.