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Finding the Fourth Proportional to 354,602.76, 489,284.96 and 211,376.12

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Solution

The fourth proportional to 354,602.76, 489,284.96 and 211,376.12 is: 291,659.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,602.76 : 489,284.96 = 211,376.12 : x
  2. Step 2: Convert to fraction form
    354,602.76/489,284.96 = 211,376.12/x
  3. Step 3: Cross multiply
    354,602.76x = 489,284.96 × 211,376.12
  4. Step 4: Simplify right side
    354,602.76x = 103,423,156,419.16
  5. Step 5: Solve for x
    x = 103,423,156,419.16/354,602.76
  6. Step 6: Final answer
    x = 291,659.20

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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.