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Finding the Fourth Proportional to 282,403.40, 423,605.10 and 211,544.60

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Solution

The fourth proportional to 282,403.40, 423,605.10 and 211,544.60 is: 317,316.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,403.40 : 423,605.10 = 211,544.60 : x
  2. Step 2: Convert to fraction form
    282,403.40/423,605.10 = 211,544.60/x
  3. Step 3: Cross multiply
    282,403.40x = 423,605.10 × 211,544.60
  4. Step 4: Simplify right side
    282,403.40x = 89,611,371,437.46
  5. Step 5: Solve for x
    x = 89,611,371,437.46/282,403.40
  6. Step 6: Final answer
    x = 317,316.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.