Home / 354,989,039.40-489,903,798.06-198,359,948.52

Finding the Fourth Proportional to 354,989,039.40, 489,903,798.06 and 198,359,948.52

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Solution

The fourth proportional to 354,989,039.40, 489,903,798.06 and 198,359,948.52 is: 273,747,303.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,989,039.40 : 489,903,798.06 = 198,359,948.52 : x
  2. Step 2: Convert to fraction form
    354,989,039.40/489,903,798.06 = 198,359,948.52/x
  3. Step 3: Cross multiply
    354,989,039.40x = 489,903,798.06 × 198,359,948.52
  4. Step 4: Simplify right side
    354,989,039.40x = 97,177,292,162,934,080
  5. Step 5: Solve for x
    x = 97,177,292,162,934,080/354,989,039.40
  6. Step 6: Final answer
    x = 273,747,303.09

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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.