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Finding the Fourth Proportional to 387,483.48, 581,224.32 and 106,999.92

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Solution

The fourth proportional to 387,483.48, 581,224.32 and 106,999.92 is: 160,499.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,483.48 : 581,224.32 = 106,999.92 : x
  2. Step 2: Convert to fraction form
    387,483.48/581,224.32 = 106,999.92/x
  3. Step 3: Cross multiply
    387,483.48x = 581,224.32 × 106,999.92
  4. Step 4: Simplify right side
    387,483.48x = 62,190,955,742.05
  5. Step 5: Solve for x
    x = 62,190,955,742.05/387,483.48
  6. Step 6: Final answer
    x = 160,499.63

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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.