Home / 438,056.20-656,954.70-171,663.40

Finding the Fourth Proportional to 438,056.20, 656,954.70 and 171,663.40

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Solution

The fourth proportional to 438,056.20, 656,954.70 and 171,663.40 is: 257,444.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,056.20 : 656,954.70 = 171,663.40 : x
  2. Step 2: Convert to fraction form
    438,056.20/656,954.70 = 171,663.40/x
  3. Step 3: Cross multiply
    438,056.20x = 656,954.70 × 171,663.40
  4. Step 4: Simplify right side
    438,056.20x = 112,775,077,447.98
  5. Step 5: Solve for x
    x = 112,775,077,447.98/438,056.20
  6. Step 6: Final answer
    x = 257,444.31

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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.