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Finding the Fourth Proportional to 480,265.20, 719,706.60 and 213,807.60

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Solution

The fourth proportional to 480,265.20, 719,706.60 and 213,807.60 is: 320,403.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,265.20 : 719,706.60 = 213,807.60 : x
  2. Step 2: Convert to fraction form
    480,265.20/719,706.60 = 213,807.60/x
  3. Step 3: Cross multiply
    480,265.20x = 719,706.60 × 213,807.60
  4. Step 4: Simplify right side
    480,265.20x = 153,878,740,850.16
  5. Step 5: Solve for x
    x = 153,878,740,850.16/480,265.20
  6. Step 6: Final answer
    x = 320,403.69

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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.