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Finding the Fourth Proportional to 387,220.32, 581,058.72 and 162,620.16

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Solution

The fourth proportional to 387,220.32, 581,058.72 and 162,620.16 is: 244,026.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,220.32 : 581,058.72 = 162,620.16 : x
  2. Step 2: Convert to fraction form
    387,220.32/581,058.72 = 162,620.16/x
  3. Step 3: Cross multiply
    387,220.32x = 581,058.72 × 162,620.16
  4. Step 4: Simplify right side
    387,220.32x = 94,491,862,015.80
  5. Step 5: Solve for x
    x = 94,491,862,015.80/387,220.32
  6. Step 6: Final answer
    x = 244,026.09

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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.