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Finding the Fourth Proportional to 328,319.64, 492,479.40 and 79,001.64

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Solution

The fourth proportional to 328,319.64, 492,479.40 and 79,001.64 is: 118,502.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,319.64 : 492,479.40 = 79,001.64 : x
  2. Step 2: Convert to fraction form
    328,319.64/492,479.40 = 79,001.64/x
  3. Step 3: Cross multiply
    328,319.64x = 492,479.40 × 79,001.64
  4. Step 4: Simplify right side
    328,319.64x = 38,906,680,266.22
  5. Step 5: Solve for x
    x = 38,906,680,266.22/328,319.64
  6. Step 6: Final answer
    x = 118,502.45

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Similar ratio
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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.