Home / 389,745.13-537,849.89-210,897.13

Finding the Fourth Proportional to 389,745.13, 537,849.89 and 210,897.13

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Solution

The fourth proportional to 389,745.13, 537,849.89 and 210,897.13 is: 291,038.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,745.13 : 537,849.89 = 210,897.13 : x
  2. Step 2: Convert to fraction form
    389,745.13/537,849.89 = 210,897.13/x
  3. Step 3: Cross multiply
    389,745.13x = 537,849.89 × 210,897.13
  4. Step 4: Simplify right side
    389,745.13x = 113,430,998,171.82
  5. Step 5: Solve for x
    x = 113,430,998,171.82/389,745.13
  6. Step 6: Final answer
    x = 291,038.91

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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.