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Finding the Fourth Proportional to 389,499.68, 537,509.36 and 210,651.68

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Solution

The fourth proportional to 389,499.68, 537,509.36 and 210,651.68 is: 290,699.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,499.68 : 537,509.36 = 210,651.68 : x
  2. Step 2: Convert to fraction form
    389,499.68/537,509.36 = 210,651.68/x
  3. Step 3: Cross multiply
    389,499.68x = 537,509.36 × 210,651.68
  4. Step 4: Simplify right side
    389,499.68x = 113,227,249,699.73
  5. Step 5: Solve for x
    x = 113,227,249,699.73/389,499.68
  6. Step 6: Final answer
    x = 290,699.21

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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.