Home / 445,913.36-669,088.74-209,275.28

Finding the Fourth Proportional to 445,913.36, 669,088.74 and 209,275.28

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Solution

The fourth proportional to 445,913.36, 669,088.74 and 209,275.28 is: 314,015.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,913.36 : 669,088.74 = 209,275.28 : x
  2. Step 2: Convert to fraction form
    445,913.36/669,088.74 = 209,275.28/x
  3. Step 3: Cross multiply
    445,913.36x = 669,088.74 × 209,275.28
  4. Step 4: Simplify right side
    445,913.36x = 140,023,733,408.35
  5. Step 5: Solve for x
    x = 140,023,733,408.35/445,913.36
  6. Step 6: Final answer
    x = 314,015.56

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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.