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Finding the Fourth Proportional to 486,459.64, 671,307.78 and 271,603

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Solution

The fourth proportional to 486,459.64, 671,307.78 and 271,603 is: 374,808.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,459.64 : 671,307.78 = 271,603 : x
  2. Step 2: Convert to fraction form
    486,459.64/671,307.78 = 271,603/x
  3. Step 3: Cross multiply
    486,459.64x = 671,307.78 × 271,603
  4. Step 4: Simplify right side
    486,459.64x = 182,329,206,971.34
  5. Step 5: Solve for x
    x = 182,329,206,971.34/486,459.64
  6. Step 6: Final answer
    x = 374,808.50

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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.