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Finding the Fourth Proportional to 346,682.40, 520,023.60 and 290,695.20

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Solution

The fourth proportional to 346,682.40, 520,023.60 and 290,695.20 is: 436,042.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,682.40 : 520,023.60 = 290,695.20 : x
  2. Step 2: Convert to fraction form
    346,682.40/520,023.60 = 290,695.20/x
  3. Step 3: Cross multiply
    346,682.40x = 520,023.60 × 290,695.20
  4. Step 4: Simplify right side
    346,682.40x = 151,168,364,406.72
  5. Step 5: Solve for x
    x = 151,168,364,406.72/346,682.40
  6. Step 6: Final answer
    x = 436,042.80

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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.