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Finding the Fourth Proportional to 316,770.32, 437,131.64 and 180,811.28

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Solution

The fourth proportional to 316,770.32, 437,131.64 and 180,811.28 is: 249,513.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,770.32 : 437,131.64 = 180,811.28 : x
  2. Step 2: Convert to fraction form
    316,770.32/437,131.64 = 180,811.28/x
  3. Step 3: Cross multiply
    316,770.32x = 437,131.64 × 180,811.28
  4. Step 4: Simplify right side
    316,770.32x = 79,038,331,356.90
  5. Step 5: Solve for x
    x = 79,038,331,356.90/316,770.32
  6. Step 6: Final answer
    x = 249,513.06

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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.