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Finding the Fourth Proportional to 400,637.80, 600,081.90 and 242,590.60

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Solution

The fourth proportional to 400,637.80, 600,081.90 and 242,590.60 is: 363,356.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,637.80 : 600,081.90 = 242,590.60 : x
  2. Step 2: Convert to fraction form
    400,637.80/600,081.90 = 242,590.60/x
  3. Step 3: Cross multiply
    400,637.80x = 600,081.90 × 242,590.60
  4. Step 4: Simplify right side
    400,637.80x = 145,574,228,170.14
  5. Step 5: Solve for x
    x = 145,574,228,170.14/400,637.80
  6. Step 6: Final answer
    x = 363,356.20

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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.