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Finding the Fourth Proportional to 338,616.80, 507,464.40 and 240,005.60

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Solution

The fourth proportional to 338,616.80, 507,464.40 and 240,005.60 is: 359,681.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,616.80 : 507,464.40 = 240,005.60 : x
  2. Step 2: Convert to fraction form
    338,616.80/507,464.40 = 240,005.60/x
  3. Step 3: Cross multiply
    338,616.80x = 507,464.40 × 240,005.60
  4. Step 4: Simplify right side
    338,616.80x = 121,794,297,800.64
  5. Step 5: Solve for x
    x = 121,794,297,800.64/338,616.80
  6. Step 6: Final answer
    x = 359,681.79

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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.