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Finding the Fourth Proportional to 547,808.60, 821,712.90 and 173,869.40

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Solution

The fourth proportional to 547,808.60, 821,712.90 and 173,869.40 is: 260,804.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,808.60 : 821,712.90 = 173,869.40 : x
  2. Step 2: Convert to fraction form
    547,808.60/821,712.90 = 173,869.40/x
  3. Step 3: Cross multiply
    547,808.60x = 821,712.90 × 173,869.40
  4. Step 4: Simplify right side
    547,808.60x = 142,870,728,895.26
  5. Step 5: Solve for x
    x = 142,870,728,895.26/547,808.60
  6. Step 6: Final answer
    x = 260,804.10

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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.