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Finding the Fourth Proportional to 282,893,990.40, 390,160,800 and 166,888,512

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Solution

The fourth proportional to 282,893,990.40, 390,160,800 and 166,888,512 is: 230,168,747.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,893,990.40 : 390,160,800 = 166,888,512 : x
  2. Step 2: Convert to fraction form
    282,893,990.40/390,160,800 = 166,888,512/x
  3. Step 3: Cross multiply
    282,893,990.40x = 390,160,800 × 166,888,512
  4. Step 4: Simplify right side
    282,893,990.40x = 65,113,355,352,729,600
  5. Step 5: Solve for x
    x = 65,113,355,352,729,600/282,893,990.40
  6. Step 6: Final answer
    x = 230,168,747.17

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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.