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Finding the Fourth Proportional to 354,545, 489,275.20 and 193,400.76

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Solution

The fourth proportional to 354,545, 489,275.20 and 193,400.76 is: 266,894.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,545 : 489,275.20 = 193,400.76 : x
  2. Step 2: Convert to fraction form
    354,545/489,275.20 = 193,400.76/x
  3. Step 3: Cross multiply
    354,545x = 489,275.20 × 193,400.76
  4. Step 4: Simplify right side
    354,545x = 94,626,195,529.15
  5. Step 5: Solve for x
    x = 94,626,195,529.15/354,545
  6. Step 6: Final answer
    x = 266,894.74

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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.