Home / 280,965,696.25-387,724,243.40-155,523,034

Finding the Fourth Proportional to 280,965,696.25, 387,724,243.40 and 155,523,034

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Solution

The fourth proportional to 280,965,696.25, 387,724,243.40 and 155,523,034 is: 214,617,127.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,965,696.25 : 387,724,243.40 = 155,523,034 : x
  2. Step 2: Convert to fraction form
    280,965,696.25/387,724,243.40 = 155,523,034/x
  3. Step 3: Cross multiply
    280,965,696.25x = 387,724,243.40 × 155,523,034
  4. Step 4: Simplify right side
    280,965,696.25x = 60,300,050,688,922,472
  5. Step 5: Solve for x
    x = 60,300,050,688,922,472/280,965,696.25
  6. Step 6: Final answer
    x = 214,617,127.62

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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.