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Finding the Fourth Proportional to 346,657.46, 478,390.46 and 203,419.89

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Solution

The fourth proportional to 346,657.46, 478,390.46 and 203,419.89 is: 280,721.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,657.46 : 478,390.46 = 203,419.89 : x
  2. Step 2: Convert to fraction form
    346,657.46/478,390.46 = 203,419.89/x
  3. Step 3: Cross multiply
    346,657.46x = 478,390.46 × 203,419.89
  4. Step 4: Simplify right side
    346,657.46x = 97,314,133,733.15
  5. Step 5: Solve for x
    x = 97,314,133,733.15/346,657.46
  6. Step 6: Final answer
    x = 280,721.31

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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.