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Finding the Fourth Proportional to 346,689.60, 520,084.80 and 147,009.60

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Solution

The fourth proportional to 346,689.60, 520,084.80 and 147,009.60 is: 220,535.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,689.60 : 520,084.80 = 147,009.60 : x
  2. Step 2: Convert to fraction form
    346,689.60/520,084.80 = 147,009.60/x
  3. Step 3: Cross multiply
    346,689.60x = 520,084.80 × 147,009.60
  4. Step 4: Simplify right side
    346,689.60x = 76,457,458,414.08
  5. Step 5: Solve for x
    x = 76,457,458,414.08/346,689.60
  6. Step 6: Final answer
    x = 220,535.77

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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.