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Finding the Fourth Proportional to 346,710.72, 478,425.60 and 195,778.56

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Solution

The fourth proportional to 346,710.72, 478,425.60 and 195,778.56 is: 270,154.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,710.72 : 478,425.60 = 195,778.56 : x
  2. Step 2: Convert to fraction form
    346,710.72/478,425.60 = 195,778.56/x
  3. Step 3: Cross multiply
    346,710.72x = 478,425.60 × 195,778.56
  4. Step 4: Simplify right side
    346,710.72x = 93,665,475,035.14
  5. Step 5: Solve for x
    x = 93,665,475,035.14/346,710.72
  6. Step 6: Final answer
    x = 270,154.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.