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Finding the Fourth Proportional to 265,889,567.80, 366,988,825.60 and 155,916,710.20

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Solution

The fourth proportional to 265,889,567.80, 366,988,825.60 and 155,916,710.20 is: 215,200,960.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,889,567.80 : 366,988,825.60 = 155,916,710.20 : x
  2. Step 2: Convert to fraction form
    265,889,567.80/366,988,825.60 = 155,916,710.20/x
  3. Step 3: Cross multiply
    265,889,567.80x = 366,988,825.60 × 155,916,710.20
  4. Step 4: Simplify right side
    265,889,567.80x = 57,219,690,367,713,544
  5. Step 5: Solve for x
    x = 57,219,690,367,713,544/265,889,567.80
  6. Step 6: Final answer
    x = 215,200,960.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.