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Finding the Fourth Proportional to 286,731.06, 395,698.95 and 157,679.34

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Solution

The fourth proportional to 286,731.06, 395,698.95 and 157,679.34 is: 217,603.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,731.06 : 395,698.95 = 157,679.34 : x
  2. Step 2: Convert to fraction form
    286,731.06/395,698.95 = 157,679.34/x
  3. Step 3: Cross multiply
    286,731.06x = 395,698.95 × 157,679.34
  4. Step 4: Simplify right side
    286,731.06x = 62,393,549,274.69
  5. Step 5: Solve for x
    x = 62,393,549,274.69/286,731.06
  6. Step 6: Final answer
    x = 217,603.04

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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.