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Finding the Fourth Proportional to 445,521.48, 668,061.12 and 141,876.07

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Solution

The fourth proportional to 445,521.48, 668,061.12 and 141,876.07 is: 212,743.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,521.48 : 668,061.12 = 141,876.07 : x
  2. Step 2: Convert to fraction form
    445,521.48/668,061.12 = 141,876.07/x
  3. Step 3: Cross multiply
    445,521.48x = 668,061.12 × 141,876.07
  4. Step 4: Simplify right side
    445,521.48x = 94,781,884,555.25
  5. Step 5: Solve for x
    x = 94,781,884,555.25/445,521.48
  6. Step 6: Final answer
    x = 212,743.69

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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.