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Finding the Fourth Proportional to 404,397.79, 606,682.85 and 120,089.21

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Solution

The fourth proportional to 404,397.79, 606,682.85 and 120,089.21 is: 180,159.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,397.79 : 606,682.85 = 120,089.21 : x
  2. Step 2: Convert to fraction form
    404,397.79/606,682.85 = 120,089.21/x
  3. Step 3: Cross multiply
    404,397.79x = 606,682.85 × 120,089.21
  4. Step 4: Simplify right side
    404,397.79x = 72,856,060,543.19
  5. Step 5: Solve for x
    x = 72,856,060,543.19/404,397.79
  6. Step 6: Final answer
    x = 180,159.39

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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.