Home / 399,587.58-551,432.07-229,810.50

Finding the Fourth Proportional to 399,587.58, 551,432.07 and 229,810.50

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Solution

The fourth proportional to 399,587.58, 551,432.07 and 229,810.50 is: 317,139.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,587.58 : 551,432.07 = 229,810.50 : x
  2. Step 2: Convert to fraction form
    399,587.58/551,432.07 = 229,810.50/x
  3. Step 3: Cross multiply
    399,587.58x = 551,432.07 × 229,810.50
  4. Step 4: Simplify right side
    399,587.58x = 126,724,879,722.74
  5. Step 5: Solve for x
    x = 126,724,879,722.74/399,587.58
  6. Step 6: Final answer
    x = 317,139.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.