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Finding the Fourth Proportional to 202,639.60, 304,132.20 and 90,492.40

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Solution

The fourth proportional to 202,639.60, 304,132.20 and 90,492.40 is: 135,815.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,639.60 : 304,132.20 = 90,492.40 : x
  2. Step 2: Convert to fraction form
    202,639.60/304,132.20 = 90,492.40/x
  3. Step 3: Cross multiply
    202,639.60x = 304,132.20 × 90,492.40
  4. Step 4: Simplify right side
    202,639.60x = 27,521,652,695.28
  5. Step 5: Solve for x
    x = 27,521,652,695.28/202,639.60
  6. Step 6: Final answer
    x = 135,815.77

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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.