Home / 258,686,231.60-388,029,347.40-243,380,730.80

Finding the Fourth Proportional to 258,686,231.60, 388,029,347.40 and 243,380,730.80

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Solution

The fourth proportional to 258,686,231.60, 388,029,347.40 and 243,380,730.80 is: 365,071,096.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,686,231.60 : 388,029,347.40 = 243,380,730.80 : x
  2. Step 2: Convert to fraction form
    258,686,231.60/388,029,347.40 = 243,380,730.80/x
  3. Step 3: Cross multiply
    258,686,231.60x = 388,029,347.40 × 243,380,730.80
  4. Step 4: Simplify right side
    258,686,231.60x = 94,438,866,142,059,072
  5. Step 5: Solve for x
    x = 94,438,866,142,059,072/258,686,231.60
  6. Step 6: Final answer
    x = 365,071,096.20

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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.