Home / 319,426.20-479,139.30-293,621.40

Finding the Fourth Proportional to 319,426.20, 479,139.30 and 293,621.40

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Solution

The fourth proportional to 319,426.20, 479,139.30 and 293,621.40 is: 440,432.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,426.20 : 479,139.30 = 293,621.40 : x
  2. Step 2: Convert to fraction form
    319,426.20/479,139.30 = 293,621.40/x
  3. Step 3: Cross multiply
    319,426.20x = 479,139.30 × 293,621.40
  4. Step 4: Simplify right side
    319,426.20x = 140,685,552,061.02
  5. Step 5: Solve for x
    x = 140,685,552,061.02/319,426.20
  6. Step 6: Final answer
    x = 440,432.10

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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.