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Finding the Fourth Proportional to 276,885.60, 415,328.40 and 188,312.10

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Solution

The fourth proportional to 276,885.60, 415,328.40 and 188,312.10 is: 282,468.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,885.60 : 415,328.40 = 188,312.10 : x
  2. Step 2: Convert to fraction form
    276,885.60/415,328.40 = 188,312.10/x
  3. Step 3: Cross multiply
    276,885.60x = 415,328.40 × 188,312.10
  4. Step 4: Simplify right side
    276,885.60x = 78,211,363,193.64
  5. Step 5: Solve for x
    x = 78,211,363,193.64/276,885.60
  6. Step 6: Final answer
    x = 282,468.15

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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.