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Finding the Fourth Proportional to 445,398.55, 668,192.29 and 145,856.97

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Solution

The fourth proportional to 445,398.55, 668,192.29 and 145,856.97 is: 218,816.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,398.55 : 668,192.29 = 145,856.97 : x
  2. Step 2: Convert to fraction form
    445,398.55/668,192.29 = 145,856.97/x
  3. Step 3: Cross multiply
    445,398.55x = 668,192.29 × 145,856.97
  4. Step 4: Simplify right side
    445,398.55x = 97,460,502,432.12
  5. Step 5: Solve for x
    x = 97,460,502,432.12/445,398.55
  6. Step 6: Final answer
    x = 218,816.39

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1.5x scale

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.