Home / 423,020-634,547.28-107,485.04

Finding the Fourth Proportional to 423,020, 634,547.28 and 107,485.04

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Solution

The fourth proportional to 423,020, 634,547.28 and 107,485.04 is: 161,231.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,020 : 634,547.28 = 107,485.04 : x
  2. Step 2: Convert to fraction form
    423,020/634,547.28 = 107,485.04/x
  3. Step 3: Cross multiply
    423,020x = 634,547.28 × 107,485.04
  4. Step 4: Simplify right side
    423,020x = 68,204,339,772.69
  5. Step 5: Solve for x
    x = 68,204,339,772.69/423,020
  6. Step 6: Final answer
    x = 161,231.95

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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.