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Finding the Fourth Proportional to 319,314.60, 440,657.22 and 176,079.72

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Solution

The fourth proportional to 319,314.60, 440,657.22 and 176,079.72 is: 242,991.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,314.60 : 440,657.22 = 176,079.72 : x
  2. Step 2: Convert to fraction form
    319,314.60/440,657.22 = 176,079.72/x
  3. Step 3: Cross multiply
    319,314.60x = 440,657.22 × 176,079.72
  4. Step 4: Simplify right side
    319,314.60x = 77,590,799,913.58
  5. Step 5: Solve for x
    x = 77,590,799,913.58/319,314.60
  6. Step 6: Final answer
    x = 242,991.71

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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.