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Finding the Fourth Proportional to 287,317.26, 396,482.45 and 164,803.41

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Solution

The fourth proportional to 287,317.26, 396,482.45 and 164,803.41 is: 227,419.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,317.26 : 396,482.45 = 164,803.41 : x
  2. Step 2: Convert to fraction form
    287,317.26/396,482.45 = 164,803.41/x
  3. Step 3: Cross multiply
    287,317.26x = 396,482.45 × 164,803.41
  4. Step 4: Simplify right side
    287,317.26x = 65,341,658,941.14
  5. Step 5: Solve for x
    x = 65,341,658,941.14/287,317.26
  6. Step 6: Final answer
    x = 227,419.89

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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.