Home / 319,748.40-479,622.60-306,097.20

Finding the Fourth Proportional to 319,748.40, 479,622.60 and 306,097.20

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Solution

The fourth proportional to 319,748.40, 479,622.60 and 306,097.20 is: 459,145.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,748.40 : 479,622.60 = 306,097.20 : x
  2. Step 2: Convert to fraction form
    319,748.40/479,622.60 = 306,097.20/x
  3. Step 3: Cross multiply
    319,748.40x = 479,622.60 × 306,097.20
  4. Step 4: Simplify right side
    319,748.40x = 146,811,134,916.72
  5. Step 5: Solve for x
    x = 146,811,134,916.72/319,748.40
  6. Step 6: Final answer
    x = 459,145.80

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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.