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Finding the Fourth Proportional to 346,971.80, 520,068.90 and 147,258.20

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Solution

The fourth proportional to 346,971.80, 520,068.90 and 147,258.20 is: 220,722.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,971.80 : 520,068.90 = 147,258.20 : x
  2. Step 2: Convert to fraction form
    346,971.80/520,068.90 = 147,258.20/x
  3. Step 3: Cross multiply
    346,971.80x = 520,068.90 × 147,258.20
  4. Step 4: Simplify right side
    346,971.80x = 76,584,410,089.98
  5. Step 5: Solve for x
    x = 76,584,410,089.98/346,971.80
  6. Step 6: Final answer
    x = 220,722.29

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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.