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Finding the Fourth Proportional to 346,832.56, 478,487.28 and 274,924

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Solution

The fourth proportional to 346,832.56, 478,487.28 and 274,924 is: 379,282.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,832.56 : 478,487.28 = 274,924 : x
  2. Step 2: Convert to fraction form
    346,832.56/478,487.28 = 274,924/x
  3. Step 3: Cross multiply
    346,832.56x = 478,487.28 × 274,924
  4. Step 4: Simplify right side
    346,832.56x = 131,547,636,966.72
  5. Step 5: Solve for x
    x = 131,547,636,966.72/346,832.56
  6. Step 6: Final answer
    x = 379,282.84

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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.