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Finding the Fourth Proportional to 346,957.60, 520,225.20 and 136,343.20

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Solution

The fourth proportional to 346,957.60, 520,225.20 and 136,343.20 is: 204,431.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,957.60 : 520,225.20 = 136,343.20 : x
  2. Step 2: Convert to fraction form
    346,957.60/520,225.20 = 136,343.20/x
  3. Step 3: Cross multiply
    346,957.60x = 520,225.20 × 136,343.20
  4. Step 4: Simplify right side
    346,957.60x = 70,929,168,488.64
  5. Step 5: Solve for x
    x = 70,929,168,488.64/346,957.60
  6. Step 6: Final answer
    x = 204,431.81

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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.