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Finding the Fourth Proportional to 378,296.37, 521,883.54 and 249,068.16

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Solution

The fourth proportional to 378,296.37, 521,883.54 and 249,068.16 is: 343,605.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,296.37 : 521,883.54 = 249,068.16 : x
  2. Step 2: Convert to fraction form
    378,296.37/521,883.54 = 249,068.16/x
  3. Step 3: Cross multiply
    378,296.37x = 521,883.54 × 249,068.16
  4. Step 4: Simplify right side
    378,296.37x = 129,984,573,042.09
  5. Step 5: Solve for x
    x = 129,984,573,042.09/378,296.37
  6. Step 6: Final answer
    x = 343,605.13

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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.