Home / 319,150.20-478,725.30-219,617.40

Finding the Fourth Proportional to 319,150.20, 478,725.30 and 219,617.40

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Solution

The fourth proportional to 319,150.20, 478,725.30 and 219,617.40 is: 329,426.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,150.20 : 478,725.30 = 219,617.40 : x
  2. Step 2: Convert to fraction form
    319,150.20/478,725.30 = 219,617.40/x
  3. Step 3: Cross multiply
    319,150.20x = 478,725.30 × 219,617.40
  4. Step 4: Simplify right side
    319,150.20x = 105,136,405,700.22
  5. Step 5: Solve for x
    x = 105,136,405,700.22/319,150.20
  6. Step 6: Final answer
    x = 329,426.10

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1.5x scale

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.