Home / 387,864,969.16-535,265,014.98-211,664,318.62

Finding the Fourth Proportional to 387,864,969.16, 535,265,014.98 and 211,664,318.62

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Solution

The fourth proportional to 387,864,969.16, 535,265,014.98 and 211,664,318.62 is: 292,102,957.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,864,969.16 : 535,265,014.98 = 211,664,318.62 : x
  2. Step 2: Convert to fraction form
    387,864,969.16/535,265,014.98 = 211,664,318.62/x
  3. Step 3: Cross multiply
    387,864,969.16x = 535,265,014.98 × 211,664,318.62
  4. Step 4: Simplify right side
    387,864,969.16x = 113,296,504,676,865,792
  5. Step 5: Solve for x
    x = 113,296,504,676,865,792/387,864,969.16
  6. Step 6: Final answer
    x = 292,102,957.69

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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.