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Finding the Fourth Proportional to 346,886.60, 520,329.90 and 262,905.80

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Solution

The fourth proportional to 346,886.60, 520,329.90 and 262,905.80 is: 394,358.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,886.60 : 520,329.90 = 262,905.80 : x
  2. Step 2: Convert to fraction form
    346,886.60/520,329.90 = 262,905.80/x
  3. Step 3: Cross multiply
    346,886.60x = 520,329.90 × 262,905.80
  4. Step 4: Simplify right side
    346,886.60x = 136,797,748,623.42
  5. Step 5: Solve for x
    x = 136,797,748,623.42/346,886.60
  6. Step 6: Final answer
    x = 394,358.70

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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.