Home / 430,562.15-645,443.88-190,548.47

Finding the Fourth Proportional to 430,562.15, 645,443.88 and 190,548.47

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Solution

The fourth proportional to 430,562.15, 645,443.88 and 190,548.47 is: 285,645.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,562.15 : 645,443.88 = 190,548.47 : x
  2. Step 2: Convert to fraction form
    430,562.15/645,443.88 = 190,548.47/x
  3. Step 3: Cross multiply
    430,562.15x = 645,443.88 × 190,548.47
  4. Step 4: Simplify right side
    430,562.15x = 122,988,343,804.86
  5. Step 5: Solve for x
    x = 122,988,343,804.86/430,562.15
  6. Step 6: Final answer
    x = 285,645.97

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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.