Home / 318,739.30-478,053.54-119,061.40

Finding the Fourth Proportional to 318,739.30, 478,053.54 and 119,061.40

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Solution

The fourth proportional to 318,739.30, 478,053.54 and 119,061.40 is: 178,571.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,739.30 : 478,053.54 = 119,061.40 : x
  2. Step 2: Convert to fraction form
    318,739.30/478,053.54 = 119,061.40/x
  3. Step 3: Cross multiply
    318,739.30x = 478,053.54 × 119,061.40
  4. Step 4: Simplify right side
    318,739.30x = 56,917,723,747.36
  5. Step 5: Solve for x
    x = 56,917,723,747.36/318,739.30
  6. Step 6: Final answer
    x = 178,571.40

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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.