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Finding the Fourth Proportional to 290,762.12, 436,641.41 and 157,901.87

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Solution

The fourth proportional to 290,762.12, 436,641.41 and 157,901.87 is: 237,123.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,762.12 : 436,641.41 = 157,901.87 : x
  2. Step 2: Convert to fraction form
    290,762.12/436,641.41 = 157,901.87/x
  3. Step 3: Cross multiply
    290,762.12x = 436,641.41 × 157,901.87
  4. Step 4: Simplify right side
    290,762.12x = 68,946,496,644.79
  5. Step 5: Solve for x
    x = 68,946,496,644.79/290,762.12
  6. Step 6: Final answer
    x = 237,123.38

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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.