Home / 308,780.29-426,116.74-172,814.23

Finding the Fourth Proportional to 308,780.29, 426,116.74 and 172,814.23

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Solution

The fourth proportional to 308,780.29, 426,116.74 and 172,814.23 is: 238,483.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,780.29 : 426,116.74 = 172,814.23 : x
  2. Step 2: Convert to fraction form
    308,780.29/426,116.74 = 172,814.23/x
  3. Step 3: Cross multiply
    308,780.29x = 426,116.74 × 172,814.23
  4. Step 4: Simplify right side
    308,780.29x = 73,639,036,413.82
  5. Step 5: Solve for x
    x = 73,639,036,413.82/308,780.29
  6. Step 6: Final answer
    x = 238,483.60

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1.5x scale

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.