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Finding the Fourth Proportional to 144,912.40, 216,931.20 and 144,912.40

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Solution

The fourth proportional to 144,912.40, 216,931.20 and 144,912.40 is: 216,931.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,912.40 : 216,931.20 = 144,912.40 : x
  2. Step 2: Convert to fraction form
    144,912.40/216,931.20 = 144,912.40/x
  3. Step 3: Cross multiply
    144,912.40x = 216,931.20 × 144,912.40
  4. Step 4: Simplify right side
    144,912.40x = 31,436,020,826.88
  5. Step 5: Solve for x
    x = 31,436,020,826.88/144,912.40
  6. Step 6: Final answer
    x = 216,931.20

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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.