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Finding the Fourth Proportional to 346,805.20, 520,099.80 and 136,507.60

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Solution

The fourth proportional to 346,805.20, 520,099.80 and 136,507.60 is: 204,718.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,805.20 : 520,099.80 = 136,507.60 : x
  2. Step 2: Convert to fraction form
    346,805.20/520,099.80 = 136,507.60/x
  3. Step 3: Cross multiply
    346,805.20x = 520,099.80 × 136,507.60
  4. Step 4: Simplify right side
    346,805.20x = 70,997,575,458.48
  5. Step 5: Solve for x
    x = 70,997,575,458.48/346,805.20
  6. Step 6: Final answer
    x = 204,718.89

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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.