Home / 291,921.36-402,852.08-157,785.36

Finding the Fourth Proportional to 291,921.36, 402,852.08 and 157,785.36

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Solution

The fourth proportional to 291,921.36, 402,852.08 and 157,785.36 is: 217,744.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,921.36 : 402,852.08 = 157,785.36 : x
  2. Step 2: Convert to fraction form
    291,921.36/402,852.08 = 157,785.36/x
  3. Step 3: Cross multiply
    291,921.36x = 402,852.08 × 157,785.36
  4. Step 4: Simplify right side
    291,921.36x = 63,564,160,469.55
  5. Step 5: Solve for x
    x = 63,564,160,469.55/291,921.36
  6. Step 6: Final answer
    x = 217,744.12

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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.