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Finding the Fourth Proportional to 354,360.06, 489,058.38 and 201,421.20

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Solution

The fourth proportional to 354,360.06, 489,058.38 and 201,421.20 is: 277,984.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,360.06 : 489,058.38 = 201,421.20 : x
  2. Step 2: Convert to fraction form
    354,360.06/489,058.38 = 201,421.20/x
  3. Step 3: Cross multiply
    354,360.06x = 489,058.38 × 201,421.20
  4. Step 4: Simplify right side
    354,360.06x = 98,506,725,769.66
  5. Step 5: Solve for x
    x = 98,506,725,769.66/354,360.06
  6. Step 6: Final answer
    x = 277,984.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.