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Finding the Fourth Proportional to 316,379.07, 436,602.42 and 173,139.03

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Solution

The fourth proportional to 316,379.07, 436,602.42 and 173,139.03 is: 238,931.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,379.07 : 436,602.42 = 173,139.03 : x
  2. Step 2: Convert to fraction form
    316,379.07/436,602.42 = 173,139.03/x
  3. Step 3: Cross multiply
    316,379.07x = 436,602.42 × 173,139.03
  4. Step 4: Simplify right side
    316,379.07x = 75,592,919,494.45
  5. Step 5: Solve for x
    x = 75,592,919,494.45/316,379.07
  6. Step 6: Final answer
    x = 238,931.48

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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.