Home / 287,669.05-396,996.72-160,345.55

Finding the Fourth Proportional to 287,669.05, 396,996.72 and 160,345.55

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Solution

The fourth proportional to 287,669.05, 396,996.72 and 160,345.55 is: 221,284.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,669.05 : 396,996.72 = 160,345.55 : x
  2. Step 2: Convert to fraction form
    287,669.05/396,996.72 = 160,345.55/x
  3. Step 3: Cross multiply
    287,669.05x = 396,996.72 × 160,345.55
  4. Step 4: Simplify right side
    287,669.05x = 63,656,657,416.60
  5. Step 5: Solve for x
    x = 63,656,657,416.60/287,669.05
  6. Step 6: Final answer
    x = 221,284.35

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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.