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Finding the Fourth Proportional to 354,452.34, 489,173.34 and 201,538.51

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Solution

The fourth proportional to 354,452.34, 489,173.34 and 201,538.51 is: 278,139.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,452.34 : 489,173.34 = 201,538.51 : x
  2. Step 2: Convert to fraction form
    354,452.34/489,173.34 = 201,538.51/x
  3. Step 3: Cross multiply
    354,452.34x = 489,173.34 × 201,538.51
  4. Step 4: Simplify right side
    354,452.34x = 98,587,266,075.32
  5. Step 5: Solve for x
    x = 98,587,266,075.32/354,452.34
  6. Step 6: Final answer
    x = 278,139.70

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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.