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Finding the Fourth Proportional to 243,742,990.51, 336,365,978.87 and 132,233,831.33

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Solution

The fourth proportional to 243,742,990.51, 336,365,978.87 and 132,233,831.33 is: 182,483,040.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,742,990.51 : 336,365,978.87 = 132,233,831.33 : x
  2. Step 2: Convert to fraction form
    243,742,990.51/336,365,978.87 = 132,233,831.33/x
  3. Step 3: Cross multiply
    243,742,990.51x = 336,365,978.87 × 132,233,831.33
  4. Step 4: Simplify right side
    243,742,990.51x = 44,478,962,112,702,928
  5. Step 5: Solve for x
    x = 44,478,962,112,702,928/243,742,990.51
  6. Step 6: Final answer
    x = 182,483,040.93

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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.