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Finding the Fourth Proportional to 346,659.40, 520,086.30 and 147,075.40

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Solution

The fourth proportional to 346,659.40, 520,086.30 and 147,075.40 is: 220,654.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,659.40 : 520,086.30 = 147,075.40 : x
  2. Step 2: Convert to fraction form
    346,659.40/520,086.30 = 147,075.40/x
  3. Step 3: Cross multiply
    346,659.40x = 520,086.30 × 147,075.40
  4. Step 4: Simplify right side
    346,659.40x = 76,491,900,607.02
  5. Step 5: Solve for x
    x = 76,491,900,607.02/346,659.40
  6. Step 6: Final answer
    x = 220,654.34

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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.