Home / 242,669.40-363,939.30-74,189.40

Finding the Fourth Proportional to 242,669.40, 363,939.30 and 74,189.40

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Solution

The fourth proportional to 242,669.40, 363,939.30 and 74,189.40 is: 111,264.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,669.40 : 363,939.30 = 74,189.40 : x
  2. Step 2: Convert to fraction form
    242,669.40/363,939.30 = 74,189.40/x
  3. Step 3: Cross multiply
    242,669.40x = 363,939.30 × 74,189.40
  4. Step 4: Simplify right side
    242,669.40x = 27,000,438,303.42
  5. Step 5: Solve for x
    x = 27,000,438,303.42/242,669.40
  6. Step 6: Final answer
    x = 111,264.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.