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Finding the Fourth Proportional to 393,072, 542,526.96 and 249,804

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Solution

The fourth proportional to 393,072, 542,526.96 and 249,804 is: 344,785.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,072 : 542,526.96 = 249,804 : x
  2. Step 2: Convert to fraction form
    393,072/542,526.96 = 249,804/x
  3. Step 3: Cross multiply
    393,072x = 542,526.96 × 249,804
  4. Step 4: Simplify right side
    393,072x = 135,525,404,715.84
  5. Step 5: Solve for x
    x = 135,525,404,715.84/393,072
  6. Step 6: Final answer
    x = 344,785.19

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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.