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Finding the Fourth Proportional to 356,016.90, 534,221.91 and 145,802.10

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Solution

The fourth proportional to 356,016.90, 534,221.91 and 145,802.10 is: 218,783.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,016.90 : 534,221.91 = 145,802.10 : x
  2. Step 2: Convert to fraction form
    356,016.90/534,221.91 = 145,802.10/x
  3. Step 3: Cross multiply
    356,016.90x = 534,221.91 × 145,802.10
  4. Step 4: Simplify right side
    356,016.90x = 77,890,676,344.01
  5. Step 5: Solve for x
    x = 77,890,676,344.01/356,016.90
  6. Step 6: Final answer
    x = 218,783.65

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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.