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Finding the Fourth Proportional to 356,280.57, 491,657.54 and 203,315.94

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Solution

The fourth proportional to 356,280.57, 491,657.54 and 203,315.94 is: 280,570.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,280.57 : 491,657.54 = 203,315.94 : x
  2. Step 2: Convert to fraction form
    356,280.57/491,657.54 = 203,315.94/x
  3. Step 3: Cross multiply
    356,280.57x = 491,657.54 × 203,315.94
  4. Step 4: Simplify right side
    356,280.57x = 99,961,813,886.61
  5. Step 5: Solve for x
    x = 99,961,813,886.61/356,280.57
  6. Step 6: Final answer
    x = 280,570.49

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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.