Home / 390,171.03-585,295.53-105,866.10

Finding the Fourth Proportional to 390,171.03, 585,295.53 and 105,866.10

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Solution

The fourth proportional to 390,171.03, 585,295.53 and 105,866.10 is: 158,809.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,171.03 : 585,295.53 = 105,866.10 : x
  2. Step 2: Convert to fraction form
    390,171.03/585,295.53 = 105,866.10/x
  3. Step 3: Cross multiply
    390,171.03x = 585,295.53 × 105,866.10
  4. Step 4: Simplify right side
    390,171.03x = 61,962,955,108.53
  5. Step 5: Solve for x
    x = 61,962,955,108.53/390,171.03
  6. Step 6: Final answer
    x = 158,809.73

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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.