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Finding the Fourth Proportional to 285,847.83, 428,681.79 and 103,455.09

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Solution

The fourth proportional to 285,847.83, 428,681.79 and 103,455.09 is: 155,150.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,847.83 : 428,681.79 = 103,455.09 : x
  2. Step 2: Convert to fraction form
    285,847.83/428,681.79 = 103,455.09/x
  3. Step 3: Cross multiply
    285,847.83x = 428,681.79 × 103,455.09
  4. Step 4: Simplify right side
    285,847.83x = 44,349,313,165.81
  5. Step 5: Solve for x
    x = 44,349,313,165.81/285,847.83
  6. Step 6: Final answer
    x = 155,150.08

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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.