Home / 470,013.60-648,619.20-255,153.60

Finding the Fourth Proportional to 470,013.60, 648,619.20 and 255,153.60

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Solution

The fourth proportional to 470,013.60, 648,619.20 and 255,153.60 is: 352,112.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,013.60 : 648,619.20 = 255,153.60 : x
  2. Step 2: Convert to fraction form
    470,013.60/648,619.20 = 255,153.60/x
  3. Step 3: Cross multiply
    470,013.60x = 648,619.20 × 255,153.60
  4. Step 4: Simplify right side
    470,013.60x = 165,497,523,909.12
  5. Step 5: Solve for x
    x = 165,497,523,909.12/470,013.60
  6. Step 6: Final answer
    x = 352,112.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.