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Finding the Fourth Proportional to 407,856.48, 611,700.66 and 155,048.28

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Solution

The fourth proportional to 407,856.48, 611,700.66 and 155,048.28 is: 232,540.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,856.48 : 611,700.66 = 155,048.28 : x
  2. Step 2: Convert to fraction form
    407,856.48/611,700.66 = 155,048.28/x
  3. Step 3: Cross multiply
    407,856.48x = 611,700.66 × 155,048.28
  4. Step 4: Simplify right side
    407,856.48x = 94,843,135,207.86
  5. Step 5: Solve for x
    x = 94,843,135,207.86/407,856.48
  6. Step 6: Final answer
    x = 232,540.46

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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.