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Finding the Fourth Proportional to 346,837.60, 520,256.40 and 262,856.80

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Solution

The fourth proportional to 346,837.60, 520,256.40 and 262,856.80 is: 394,285.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,837.60 : 520,256.40 = 262,856.80 : x
  2. Step 2: Convert to fraction form
    346,837.60/520,256.40 = 262,856.80/x
  3. Step 3: Cross multiply
    346,837.60x = 520,256.40 × 262,856.80
  4. Step 4: Simplify right side
    346,837.60x = 136,752,932,483.52
  5. Step 5: Solve for x
    x = 136,752,932,483.52/346,837.60
  6. Step 6: Final answer
    x = 394,285.20

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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.