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Finding the Fourth Proportional to 346,650.46, 478,380.80 and 203,412.89

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Solution

The fourth proportional to 346,650.46, 478,380.80 and 203,412.89 is: 280,711.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,650.46 : 478,380.80 = 203,412.89 : x
  2. Step 2: Convert to fraction form
    346,650.46/478,380.80 = 203,412.89/x
  3. Step 3: Cross multiply
    346,650.46x = 478,380.80 × 203,412.89
  4. Step 4: Simplify right side
    346,650.46x = 97,308,821,048.51
  5. Step 5: Solve for x
    x = 97,308,821,048.51/346,650.46
  6. Step 6: Final answer
    x = 280,711.65

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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.