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Finding the Fourth Proportional to 328,045.40, 491,994.20 and 117,683.32

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Solution

The fourth proportional to 328,045.40, 491,994.20 and 117,683.32 is: 176,498.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,045.40 : 491,994.20 = 117,683.32 : x
  2. Step 2: Convert to fraction form
    328,045.40/491,994.20 = 117,683.32/x
  3. Step 3: Cross multiply
    328,045.40x = 491,994.20 × 117,683.32
  4. Step 4: Simplify right side
    328,045.40x = 57,899,510,876.74
  5. Step 5: Solve for x
    x = 57,899,510,876.74/328,045.40
  6. Step 6: Final answer
    x = 176,498.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.