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Finding the Fourth Proportional to 290,730.40, 435,058.80 and 201,565.60

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Solution

The fourth proportional to 290,730.40, 435,058.80 and 201,565.60 is: 301,629.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,730.40 : 435,058.80 = 201,565.60 : x
  2. Step 2: Convert to fraction form
    290,730.40/435,058.80 = 201,565.60/x
  3. Step 3: Cross multiply
    290,730.40x = 435,058.80 × 201,565.60
  4. Step 4: Simplify right side
    290,730.40x = 87,692,888,057.28
  5. Step 5: Solve for x
    x = 87,692,888,057.28/290,730.40
  6. Step 6: Final answer
    x = 301,629.58

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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.