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Finding the Fourth Proportional to 478,296.57, 717,455.70 and 178,613.67

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Solution

The fourth proportional to 478,296.57, 717,455.70 and 178,613.67 is: 267,924.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,296.57 : 717,455.70 = 178,613.67 : x
  2. Step 2: Convert to fraction form
    478,296.57/717,455.70 = 178,613.67/x
  3. Step 3: Cross multiply
    478,296.57x = 717,455.70 × 178,613.67
  4. Step 4: Simplify right side
    478,296.57x = 128,147,395,639.42
  5. Step 5: Solve for x
    x = 128,147,395,639.42/478,296.57
  6. Step 6: Final answer
    x = 267,924.55

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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.