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Finding the Fourth Proportional to 513,853.20, 770,779.80 and 158,903.10

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Solution

The fourth proportional to 513,853.20, 770,779.80 and 158,903.10 is: 238,354.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,853.20 : 770,779.80 = 158,903.10 : x
  2. Step 2: Convert to fraction form
    513,853.20/770,779.80 = 158,903.10/x
  3. Step 3: Cross multiply
    513,853.20x = 770,779.80 × 158,903.10
  4. Step 4: Simplify right side
    513,853.20x = 122,479,299,637.38
  5. Step 5: Solve for x
    x = 122,479,299,637.38/513,853.20
  6. Step 6: Final answer
    x = 238,354.65

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Double scale
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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.