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Finding the Fourth Proportional to 316,703.31, 437,057.64 and 180,734.55

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Solution

The fourth proportional to 316,703.31, 437,057.64 and 180,734.55 is: 249,417.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,703.31 : 437,057.64 = 180,734.55 : x
  2. Step 2: Convert to fraction form
    316,703.31/437,057.64 = 180,734.55/x
  3. Step 3: Cross multiply
    316,703.31x = 437,057.64 × 180,734.55
  4. Step 4: Simplify right side
    316,703.31x = 78,991,415,889.46
  5. Step 5: Solve for x
    x = 78,991,415,889.46/316,703.31
  6. Step 6: Final answer
    x = 249,417.71

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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.