Home / 388,639,963.89-583,062,045.12-139,670,358.46

Finding the Fourth Proportional to 388,639,963.89, 583,062,045.12 and 139,670,358.46

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Solution

The fourth proportional to 388,639,963.89, 583,062,045.12 and 139,670,358.46 is: 209,542,230.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,639,963.89 : 583,062,045.12 = 139,670,358.46 : x
  2. Step 2: Convert to fraction form
    388,639,963.89/583,062,045.12 = 139,670,358.46/x
  3. Step 3: Cross multiply
    388,639,963.89x = 583,062,045.12 × 139,670,358.46
  4. Step 4: Simplify right side
    388,639,963.89x = 81,436,484,844,873,440
  5. Step 5: Solve for x
    x = 81,436,484,844,873,440/388,639,963.89
  6. Step 6: Final answer
    x = 209,542,230.37

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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.