Home / 279,437.25-385,623.45-152,113.80

Finding the Fourth Proportional to 279,437.25, 385,623.45 and 152,113.80

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Solution

The fourth proportional to 279,437.25, 385,623.45 and 152,113.80 is: 209,917.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,437.25 : 385,623.45 = 152,113.80 : x
  2. Step 2: Convert to fraction form
    279,437.25/385,623.45 = 152,113.80/x
  3. Step 3: Cross multiply
    279,437.25x = 385,623.45 × 152,113.80
  4. Step 4: Simplify right side
    279,437.25x = 58,658,648,348.61
  5. Step 5: Solve for x
    x = 58,658,648,348.61/279,437.25
  6. Step 6: Final answer
    x = 209,917.07

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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.