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Finding the Fourth Proportional to 340,647.36, 510,971.04 and 130,349.76

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Solution

The fourth proportional to 340,647.36, 510,971.04 and 130,349.76 is: 195,524.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,647.36 : 510,971.04 = 130,349.76 : x
  2. Step 2: Convert to fraction form
    340,647.36/510,971.04 = 130,349.76/x
  3. Step 3: Cross multiply
    340,647.36x = 510,971.04 × 130,349.76
  4. Step 4: Simplify right side
    340,647.36x = 66,604,952,430.95
  5. Step 5: Solve for x
    x = 66,604,952,430.95/340,647.36
  6. Step 6: Final answer
    x = 195,524.64

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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.