Home / 389,827.89-537,962.31-210,979.89

Finding the Fourth Proportional to 389,827.89, 537,962.31 and 210,979.89

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Solution

The fourth proportional to 389,827.89, 537,962.31 and 210,979.89 is: 291,152.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,827.89 : 537,962.31 = 210,979.89 : x
  2. Step 2: Convert to fraction form
    389,827.89/537,962.31 = 210,979.89/x
  3. Step 3: Cross multiply
    389,827.89x = 537,962.31 × 210,979.89
  4. Step 4: Simplify right side
    389,827.89x = 113,499,228,987.95
  5. Step 5: Solve for x
    x = 113,499,228,987.95/389,827.89
  6. Step 6: Final answer
    x = 291,152.15

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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.