Home / 302,785.12-417,844.74-173,728.72

Finding the Fourth Proportional to 302,785.12, 417,844.74 and 173,728.72

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Solution

The fourth proportional to 302,785.12, 417,844.74 and 173,728.72 is: 239,746.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,785.12 : 417,844.74 = 173,728.72 : x
  2. Step 2: Convert to fraction form
    302,785.12/417,844.74 = 173,728.72/x
  3. Step 3: Cross multiply
    302,785.12x = 417,844.74 × 173,728.72
  4. Step 4: Simplify right side
    302,785.12x = 72,591,631,838.93
  5. Step 5: Solve for x
    x = 72,591,631,838.93/302,785.12
  6. Step 6: Final answer
    x = 239,746.36

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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.