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Finding the Fourth Proportional to 144,411.40, 216,617.10 and 74,427.40

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Solution

The fourth proportional to 144,411.40, 216,617.10 and 74,427.40 is: 111,641.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,411.40 : 216,617.10 = 74,427.40 : x
  2. Step 2: Convert to fraction form
    144,411.40/216,617.10 = 74,427.40/x
  3. Step 3: Cross multiply
    144,411.40x = 216,617.10 × 74,427.40
  4. Step 4: Simplify right side
    144,411.40x = 16,122,247,548.54
  5. Step 5: Solve for x
    x = 16,122,247,548.54/144,411.40
  6. Step 6: Final answer
    x = 111,641.10

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1.5x scale

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.