Home / 312,116.18-430,721.81-176,155.86

Finding the Fourth Proportional to 312,116.18, 430,721.81 and 176,155.86

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Solution

The fourth proportional to 312,116.18, 430,721.81 and 176,155.86 is: 243,095.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,116.18 : 430,721.81 = 176,155.86 : x
  2. Step 2: Convert to fraction form
    312,116.18/430,721.81 = 176,155.86/x
  3. Step 3: Cross multiply
    312,116.18x = 430,721.81 × 176,155.86
  4. Step 4: Simplify right side
    312,116.18x = 75,874,169,980.53
  5. Step 5: Solve for x
    x = 75,874,169,980.53/312,116.18
  6. Step 6: Final answer
    x = 243,095.92

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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.