Home / 279,463.18-385,647.09-152,139.22

Finding the Fourth Proportional to 279,463.18, 385,647.09 and 152,139.22

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Solution

The fourth proportional to 279,463.18, 385,647.09 and 152,139.22 is: 209,945.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,463.18 : 385,647.09 = 152,139.22 : x
  2. Step 2: Convert to fraction form
    279,463.18/385,647.09 = 152,139.22/x
  3. Step 3: Cross multiply
    279,463.18x = 385,647.09 × 152,139.22
  4. Step 4: Simplify right side
    279,463.18x = 58,672,047,467.87
  5. Step 5: Solve for x
    x = 58,672,047,467.87/279,463.18
  6. Step 6: Final answer
    x = 209,945.54

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1.5x scale

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.