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Finding the Fourth Proportional to 235,670.84, 325,220.42 and 128,241.16

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Solution

The fourth proportional to 235,670.84, 325,220.42 and 128,241.16 is: 176,969.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,670.84 : 325,220.42 = 128,241.16 : x
  2. Step 2: Convert to fraction form
    235,670.84/325,220.42 = 128,241.16/x
  3. Step 3: Cross multiply
    235,670.84x = 325,220.42 × 128,241.16
  4. Step 4: Simplify right side
    235,670.84x = 41,706,643,916.49
  5. Step 5: Solve for x
    x = 41,706,643,916.49/235,670.84
  6. Step 6: Final answer
    x = 176,969.90

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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.