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Finding the Fourth Proportional to 328,347.04, 490,146.22 and 288,488.96

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Solution

The fourth proportional to 328,347.04, 490,146.22 and 288,488.96 is: 430,647.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,347.04 : 490,146.22 = 288,488.96 : x
  2. Step 2: Convert to fraction form
    328,347.04/490,146.22 = 288,488.96/x
  3. Step 3: Cross multiply
    328,347.04x = 490,146.22 × 288,488.96
  4. Step 4: Simplify right side
    328,347.04x = 141,401,773,255.73
  5. Step 5: Solve for x
    x = 141,401,773,255.73/328,347.04
  6. Step 6: Final answer
    x = 430,647.32

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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.