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Finding the Fourth Proportional to 295,259.60, 442,428.60 and 255,630.80

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Solution

The fourth proportional to 295,259.60, 442,428.60 and 255,630.80 is: 383,047.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,259.60 : 442,428.60 = 255,630.80 : x
  2. Step 2: Convert to fraction form
    295,259.60/442,428.60 = 255,630.80/x
  3. Step 3: Cross multiply
    295,259.60x = 442,428.60 × 255,630.80
  4. Step 4: Simplify right side
    295,259.60x = 113,098,376,960.88
  5. Step 5: Solve for x
    x = 113,098,376,960.88/295,259.60
  6. Step 6: Final answer
    x = 383,047.25

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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.