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Finding the Fourth Proportional to 261,643.52, 361,202.56 and 154,248.32

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Solution

The fourth proportional to 261,643.52, 361,202.56 and 154,248.32 is: 212,941.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,643.52 : 361,202.56 = 154,248.32 : x
  2. Step 2: Convert to fraction form
    261,643.52/361,202.56 = 154,248.32/x
  3. Step 3: Cross multiply
    261,643.52x = 361,202.56 × 154,248.32
  4. Step 4: Simplify right side
    261,643.52x = 55,714,888,059.70
  5. Step 5: Solve for x
    x = 55,714,888,059.70/261,643.52
  6. Step 6: Final answer
    x = 212,941.98

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1.5x scale

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.