Home / 287,218.09-430,185.61-208,150.75

Finding the Fourth Proportional to 287,218.09, 430,185.61 and 208,150.75

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Solution

The fourth proportional to 287,218.09, 430,185.61 and 208,150.75 is: 311,761.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,218.09 : 430,185.61 = 208,150.75 : x
  2. Step 2: Convert to fraction form
    287,218.09/430,185.61 = 208,150.75/x
  3. Step 3: Cross multiply
    287,218.09x = 430,185.61 × 208,150.75
  4. Step 4: Simplify right side
    287,218.09x = 89,543,457,360.71
  5. Step 5: Solve for x
    x = 89,543,457,360.71/287,218.09
  6. Step 6: Final answer
    x = 311,761.20

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1.5x scale

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.