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Finding the Fourth Proportional to 313,945.20, 470,917.80 and 251,737.20

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Solution

The fourth proportional to 313,945.20, 470,917.80 and 251,737.20 is: 377,605.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,945.20 : 470,917.80 = 251,737.20 : x
  2. Step 2: Convert to fraction form
    313,945.20/470,917.80 = 251,737.20/x
  3. Step 3: Cross multiply
    313,945.20x = 470,917.80 × 251,737.20
  4. Step 4: Simplify right side
    313,945.20x = 118,547,528,402.16
  5. Step 5: Solve for x
    x = 118,547,528,402.16/313,945.20
  6. Step 6: Final answer
    x = 377,605.80

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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.