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Finding the Fourth Proportional to 287,677,453.80, 431,572,167.90 and 123,914,893.80

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Solution

The fourth proportional to 287,677,453.80, 431,572,167.90 and 123,914,893.80 is: 185,896,456.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,677,453.80 : 431,572,167.90 = 123,914,893.80 : x
  2. Step 2: Convert to fraction form
    287,677,453.80/431,572,167.90 = 123,914,893.80/x
  3. Step 3: Cross multiply
    287,677,453.80x = 431,572,167.90 × 123,914,893.80
  4. Step 4: Simplify right side
    287,677,453.80x = 53,478,219,352,364,264
  5. Step 5: Solve for x
    x = 53,478,219,352,364,264/287,677,453.80
  6. Step 6: Final answer
    x = 185,896,456.76

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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.