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Finding the Fourth Proportional to 346,924.82, 520,840.43 and 278,572.87

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Solution

The fourth proportional to 346,924.82, 520,840.43 and 278,572.87 is: 418,223.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,924.82 : 520,840.43 = 278,572.87 : x
  2. Step 2: Convert to fraction form
    346,924.82/520,840.43 = 278,572.87/x
  3. Step 3: Cross multiply
    346,924.82x = 520,840.43 × 278,572.87
  4. Step 4: Simplify right side
    346,924.82x = 145,092,009,400.07
  5. Step 5: Solve for x
    x = 145,092,009,400.07/346,924.82
  6. Step 6: Final answer
    x = 418,223.21

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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.