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Finding the Fourth Proportional to 282,036.75, 389,210.72 and 154,712.66

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Solution

The fourth proportional to 282,036.75, 389,210.72 and 154,712.66 is: 213,503.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,036.75 : 389,210.72 = 154,712.66 : x
  2. Step 2: Convert to fraction form
    282,036.75/389,210.72 = 154,712.66/x
  3. Step 3: Cross multiply
    282,036.75x = 389,210.72 × 154,712.66
  4. Step 4: Simplify right side
    282,036.75x = 60,215,823,072.10
  5. Step 5: Solve for x
    x = 60,215,823,072.10/282,036.75
  6. Step 6: Final answer
    x = 213,503.46

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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.