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Finding the Fourth Proportional to 478,475.53, 717,865.71 and 141,518.23

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Solution

The fourth proportional to 478,475.53, 717,865.71 and 141,518.23 is: 212,322.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,475.53 : 717,865.71 = 141,518.23 : x
  2. Step 2: Convert to fraction form
    478,475.53/717,865.71 = 141,518.23/x
  3. Step 3: Cross multiply
    478,475.53x = 717,865.71 × 141,518.23
  4. Step 4: Simplify right side
    478,475.53x = 101,591,084,656.89
  5. Step 5: Solve for x
    x = 101,591,084,656.89/478,475.53
  6. Step 6: Final answer
    x = 212,322.42

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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.