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Finding the Fourth Proportional to 235,681.20, 325,243.48 and 128,254.32

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Solution

The fourth proportional to 235,681.20, 325,243.48 and 128,254.32 is: 176,992.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,681.20 : 325,243.48 = 128,254.32 : x
  2. Step 2: Convert to fraction form
    235,681.20/325,243.48 = 128,254.32/x
  3. Step 3: Cross multiply
    235,681.20x = 325,243.48 × 128,254.32
  4. Step 4: Simplify right side
    235,681.20x = 41,713,881,361.83
  5. Step 5: Solve for x
    x = 41,713,881,361.83/235,681.20
  6. Step 6: Final answer
    x = 176,992.82

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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.