Home / 438,645,705.60-658,220,500.80-166,211,990.40

Finding the Fourth Proportional to 438,645,705.60, 658,220,500.80 and 166,211,990.40

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Solution

The fourth proportional to 438,645,705.60, 658,220,500.80 and 166,211,990.40 is: 249,413,451.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,645,705.60 : 658,220,500.80 = 166,211,990.40 : x
  2. Step 2: Convert to fraction form
    438,645,705.60/658,220,500.80 = 166,211,990.40/x
  3. Step 3: Cross multiply
    438,645,705.60x = 658,220,500.80 × 166,211,990.40
  4. Step 4: Simplify right side
    438,645,705.60x = 109,404,139,560,052,784
  5. Step 5: Solve for x
    x = 109,404,139,560,052,784/438,645,705.60
  6. Step 6: Final answer
    x = 249,413,451.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.