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Finding the Fourth Proportional to 276,875.60, 415,054.20 and 216,870.80

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Solution

The fourth proportional to 276,875.60, 415,054.20 and 216,870.80 is: 325,103.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,875.60 : 415,054.20 = 216,870.80 : x
  2. Step 2: Convert to fraction form
    276,875.60/415,054.20 = 216,870.80/x
  3. Step 3: Cross multiply
    276,875.60x = 415,054.20 × 216,870.80
  4. Step 4: Simplify right side
    276,875.60x = 90,013,136,397.36
  5. Step 5: Solve for x
    x = 90,013,136,397.36/276,875.60
  6. Step 6: Final answer
    x = 325,103.17

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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.