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Finding the Fourth Proportional to 328,341.04, 490,137.28 and 288,482.96

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Solution

The fourth proportional to 328,341.04, 490,137.28 and 288,482.96 is: 430,638.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,341.04 : 490,137.28 = 288,482.96 : x
  2. Step 2: Convert to fraction form
    328,341.04/490,137.28 = 288,482.96/x
  3. Step 3: Cross multiply
    328,341.04x = 490,137.28 × 288,482.96
  4. Step 4: Simplify right side
    328,341.04x = 141,396,253,340.75
  5. Step 5: Solve for x
    x = 141,396,253,340.75/328,341.04
  6. Step 6: Final answer
    x = 430,638.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.