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Finding the Fourth Proportional to 316,291.80, 436,475.88 and 173,051.40

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Solution

The fourth proportional to 316,291.80, 436,475.88 and 173,051.40 is: 238,807.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,291.80 : 436,475.88 = 173,051.40 : x
  2. Step 2: Convert to fraction form
    316,291.80/436,475.88 = 173,051.40/x
  3. Step 3: Cross multiply
    316,291.80x = 436,475.88 × 173,051.40
  4. Step 4: Simplify right side
    316,291.80x = 75,532,762,100.23
  5. Step 5: Solve for x
    x = 75,532,762,100.23/316,291.80
  6. Step 6: Final answer
    x = 238,807.21

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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.