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Finding the Fourth Proportional to 316,381.60, 436,810.37 and 282,331.53

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Solution

The fourth proportional to 316,381.60, 436,810.37 and 282,331.53 is: 389,799.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,381.60 : 436,810.37 = 282,331.53 : x
  2. Step 2: Convert to fraction form
    316,381.60/436,810.37 = 282,331.53/x
  3. Step 3: Cross multiply
    316,381.60x = 436,810.37 × 282,331.53
  4. Step 4: Simplify right side
    316,381.60x = 123,325,337,897.91
  5. Step 5: Solve for x
    x = 123,325,337,897.91/316,381.60
  6. Step 6: Final answer
    x = 389,799.34

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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.