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Finding the Fourth Proportional to 437,430, 656,145.41 and 121,895.31

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Solution

The fourth proportional to 437,430, 656,145.41 and 121,895.31 is: 182,843.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,430 : 656,145.41 = 121,895.31 : x
  2. Step 2: Convert to fraction form
    437,430/656,145.41 = 121,895.31/x
  3. Step 3: Cross multiply
    437,430x = 656,145.41 × 121,895.31
  4. Step 4: Simplify right side
    437,430x = 79,981,047,547.55
  5. Step 5: Solve for x
    x = 79,981,047,547.55/437,430
  6. Step 6: Final answer
    x = 182,843.08

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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.