Home / 285,670.32-428,371.17-105,631.35

Finding the Fourth Proportional to 285,670.32, 428,371.17 and 105,631.35

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Solution

The fourth proportional to 285,670.32, 428,371.17 and 105,631.35 is: 158,397.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,670.32 : 428,371.17 = 105,631.35 : x
  2. Step 2: Convert to fraction form
    285,670.32/428,371.17 = 105,631.35/x
  3. Step 3: Cross multiply
    285,670.32x = 428,371.17 × 105,631.35
  4. Step 4: Simplify right side
    285,670.32x = 45,249,424,988.18
  5. Step 5: Solve for x
    x = 45,249,424,988.18/285,670.32
  6. Step 6: Final answer
    x = 158,397.36

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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.