Home / 431,386,409.90-647,015,831.49-158,693,403.98

Finding the Fourth Proportional to 431,386,409.90, 647,015,831.49 and 158,693,403.98

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Solution

The fourth proportional to 431,386,409.90, 647,015,831.49 and 158,693,403.98 is: 238,016,642.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,386,409.90 : 647,015,831.49 = 158,693,403.98 : x
  2. Step 2: Convert to fraction form
    431,386,409.90/647,015,831.49 = 158,693,403.98/x
  3. Step 3: Cross multiply
    431,386,409.90x = 647,015,831.49 × 158,693,403.98
  4. Step 4: Simplify right side
    431,386,409.90x = 102,677,144,728,098,176
  5. Step 5: Solve for x
    x = 102,677,144,728,098,176/431,386,409.90
  6. Step 6: Final answer
    x = 238,016,642.09

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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.