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Finding the Fourth Proportional to 513,437.40, 770,134.65 and 134,349.72

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Solution

The fourth proportional to 513,437.40, 770,134.65 and 134,349.72 is: 201,518.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,437.40 : 770,134.65 = 134,349.72 : x
  2. Step 2: Convert to fraction form
    513,437.40/770,134.65 = 134,349.72/x
  3. Step 3: Cross multiply
    513,437.40x = 770,134.65 × 134,349.72
  4. Step 4: Simplify right side
    513,437.40x = 103,467,374,589.80
  5. Step 5: Solve for x
    x = 103,467,374,589.80/513,437.40
  6. Step 6: Final answer
    x = 201,518.97

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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.