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Finding the Fourth Proportional to 486,229.84, 671,085.00 and 290,008.89

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Solution

The fourth proportional to 486,229.84, 671,085.00 and 290,008.89 is: 400,264.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,229.84 : 671,085.00 = 290,008.89 : x
  2. Step 2: Convert to fraction form
    486,229.84/671,085.00 = 290,008.89/x
  3. Step 3: Cross multiply
    486,229.84x = 671,085.00 × 290,008.89
  4. Step 4: Simplify right side
    486,229.84x = 194,620,616,670.67
  5. Step 5: Solve for x
    x = 194,620,616,670.67/486,229.84
  6. Step 6: Final answer
    x = 400,264.65

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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.