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Finding the Fourth Proportional to 316,452.42, 436,622.54 and 187,393.37

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Solution

The fourth proportional to 316,452.42, 436,622.54 and 187,393.37 is: 258,554.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,452.42 : 436,622.54 = 187,393.37 : x
  2. Step 2: Convert to fraction form
    316,452.42/436,622.54 = 187,393.37/x
  3. Step 3: Cross multiply
    316,452.42x = 436,622.54 × 187,393.37
  4. Step 4: Simplify right side
    316,452.42x = 81,820,166,068.48
  5. Step 5: Solve for x
    x = 81,820,166,068.48/316,452.42
  6. Step 6: Final answer
    x = 258,554.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.