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Finding the Fourth Proportional to 282,503.73, 389,858 and 153,443.45

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Solution

The fourth proportional to 282,503.73, 389,858 and 153,443.45 is: 211,753.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,503.73 : 389,858 = 153,443.45 : x
  2. Step 2: Convert to fraction form
    282,503.73/389,858 = 153,443.45/x
  3. Step 3: Cross multiply
    282,503.73x = 389,858 × 153,443.45
  4. Step 4: Simplify right side
    282,503.73x = 59,821,156,530.10
  5. Step 5: Solve for x
    x = 59,821,156,530.10/282,503.73
  6. Step 6: Final answer
    x = 211,753.51

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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.