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Finding the Fourth Proportional to 288,005.60, 431,230.80 and 288,005.60

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Solution

The fourth proportional to 288,005.60, 431,230.80 and 288,005.60 is: 431,230.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,005.60 : 431,230.80 = 288,005.60 : x
  2. Step 2: Convert to fraction form
    288,005.60/431,230.80 = 288,005.60/x
  3. Step 3: Cross multiply
    288,005.60x = 431,230.80 × 288,005.60
  4. Step 4: Simplify right side
    288,005.60x = 124,196,885,292.48
  5. Step 5: Solve for x
    x = 124,196,885,292.48/288,005.60
  6. Step 6: Final answer
    x = 431,230.80

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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.