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Finding the Fourth Proportional to 316,679.81, 437,009.58 and 180,711.32

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Solution

The fourth proportional to 316,679.81, 437,009.58 and 180,711.32 is: 249,376.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,679.81 : 437,009.58 = 180,711.32 : x
  2. Step 2: Convert to fraction form
    316,679.81/437,009.58 = 180,711.32/x
  3. Step 3: Cross multiply
    316,679.81x = 437,009.58 × 180,711.32
  4. Step 4: Simplify right side
    316,679.81x = 78,972,575,869.40
  5. Step 5: Solve for x
    x = 78,972,575,869.40/316,679.81
  6. Step 6: Final answer
    x = 249,376.74

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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.