Home / 279,427.20-385,603.20-152,102.40

Finding the Fourth Proportional to 279,427.20, 385,603.20 and 152,102.40

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Solution

The fourth proportional to 279,427.20, 385,603.20 and 152,102.40 is: 209,897.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,427.20 : 385,603.20 = 152,102.40 : x
  2. Step 2: Convert to fraction form
    279,427.20/385,603.20 = 152,102.40/x
  3. Step 3: Cross multiply
    279,427.20x = 385,603.20 × 152,102.40
  4. Step 4: Simplify right side
    279,427.20x = 58,651,172,167.68
  5. Step 5: Solve for x
    x = 58,651,172,167.68/279,427.20
  6. Step 6: Final answer
    x = 209,897.86

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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.