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Finding the Fourth Proportional to 426,909.15, 640,363.73 and 160,729.38

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Solution

The fourth proportional to 426,909.15, 640,363.73 and 160,729.38 is: 241,094.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,909.15 : 640,363.73 = 160,729.38 : x
  2. Step 2: Convert to fraction form
    426,909.15/640,363.73 = 160,729.38/x
  3. Step 3: Cross multiply
    426,909.15x = 640,363.73 × 160,729.38
  4. Step 4: Simplify right side
    426,909.15x = 102,925,264,493.74
  5. Step 5: Solve for x
    x = 102,925,264,493.74/426,909.15
  6. Step 6: Final answer
    x = 241,094.07

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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.