Home / 430,025.34-645,062.62-130,515.69

Finding the Fourth Proportional to 430,025.34, 645,062.62 and 130,515.69

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Solution

The fourth proportional to 430,025.34, 645,062.62 and 130,515.69 is: 195,781.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,025.34 : 645,062.62 = 130,515.69 : x
  2. Step 2: Convert to fraction form
    430,025.34/645,062.62 = 130,515.69/x
  3. Step 3: Cross multiply
    430,025.34x = 645,062.62 × 130,515.69
  4. Step 4: Simplify right side
    430,025.34x = 84,190,792,942.51
  5. Step 5: Solve for x
    x = 84,190,792,942.51/430,025.34
  6. Step 6: Final answer
    x = 195,781.00

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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.