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Finding the Fourth Proportional to 478,659.39, 717,986.85 and 141,701.95

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Solution

The fourth proportional to 478,659.39, 717,986.85 and 141,701.95 is: 212,552.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,659.39 : 717,986.85 = 141,701.95 : x
  2. Step 2: Convert to fraction form
    478,659.39/717,986.85 = 141,701.95/x
  3. Step 3: Cross multiply
    478,659.39x = 717,986.85 × 141,701.95
  4. Step 4: Simplify right side
    478,659.39x = 101,740,136,719.36
  5. Step 5: Solve for x
    x = 101,740,136,719.36/478,659.39
  6. Step 6: Final answer
    x = 212,552.26

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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.