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Finding the Fourth Proportional to 354,471.50, 489,212.71 and 201,532.77

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Solution

The fourth proportional to 354,471.50, 489,212.71 and 201,532.77 is: 278,139.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,471.50 : 489,212.71 = 201,532.77 : x
  2. Step 2: Convert to fraction form
    354,471.50/489,212.71 = 201,532.77/x
  3. Step 3: Cross multiply
    354,471.50x = 489,212.71 × 201,532.77
  4. Step 4: Simplify right side
    354,471.50x = 98,592,392,565.51
  5. Step 5: Solve for x
    x = 98,592,392,565.51/354,471.50
  6. Step 6: Final answer
    x = 278,139.12

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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.