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Finding the Fourth Proportional to 577,390.40, 866,085.60 and 156,665.60

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Solution

The fourth proportional to 577,390.40, 866,085.60 and 156,665.60 is: 234,998.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,390.40 : 866,085.60 = 156,665.60 : x
  2. Step 2: Convert to fraction form
    577,390.40/866,085.60 = 156,665.60/x
  3. Step 3: Cross multiply
    577,390.40x = 866,085.60 × 156,665.60
  4. Step 4: Simplify right side
    577,390.40x = 135,685,820,175.36
  5. Step 5: Solve for x
    x = 135,685,820,175.36/577,390.40
  6. Step 6: Final answer
    x = 234,998.40

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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.