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Finding the Fourth Proportional to 376,891.60, 565,337.40 and 166,421.20

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Solution

The fourth proportional to 376,891.60, 565,337.40 and 166,421.20 is: 249,631.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,891.60 : 565,337.40 = 166,421.20 : x
  2. Step 2: Convert to fraction form
    376,891.60/565,337.40 = 166,421.20/x
  3. Step 3: Cross multiply
    376,891.60x = 565,337.40 × 166,421.20
  4. Step 4: Simplify right side
    376,891.60x = 94,084,128,512.88
  5. Step 5: Solve for x
    x = 94,084,128,512.88/376,891.60
  6. Step 6: Final answer
    x = 249,631.80

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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.