Home / 390,299,989.50-585,462,114.81-144,717,735.42

Finding the Fourth Proportional to 390,299,989.50, 585,462,114.81 and 144,717,735.42

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Solution

The fourth proportional to 390,299,989.50, 585,462,114.81 and 144,717,735.42 is: 217,081,100.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,299,989.50 : 585,462,114.81 = 144,717,735.42 : x
  2. Step 2: Convert to fraction form
    390,299,989.50/585,462,114.81 = 144,717,735.42/x
  3. Step 3: Cross multiply
    390,299,989.50x = 585,462,114.81 × 144,717,735.42
  4. Step 4: Simplify right side
    390,299,989.50x = 84,726,751,429,507,232
  5. Step 5: Solve for x
    x = 84,726,751,429,507,232/390,299,989.50
  6. Step 6: Final answer
    x = 217,081,100.97

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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.