Home / 317,385.12-438,005.16-190,036.38

Finding the Fourth Proportional to 317,385.12, 438,005.16 and 190,036.38

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Solution

The fourth proportional to 317,385.12, 438,005.16 and 190,036.38 is: 262,258.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,385.12 : 438,005.16 = 190,036.38 : x
  2. Step 2: Convert to fraction form
    317,385.12/438,005.16 = 190,036.38/x
  3. Step 3: Cross multiply
    317,385.12x = 438,005.16 × 190,036.38
  4. Step 4: Simplify right side
    317,385.12x = 83,236,915,027.72
  5. Step 5: Solve for x
    x = 83,236,915,027.72/317,385.12
  6. Step 6: Final answer
    x = 262,258.40

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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.