Home / 289,025,405.46-398,855,451.47-156,866,406.12

Finding the Fourth Proportional to 289,025,405.46, 398,855,451.47 and 156,866,406.12

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Solution

The fourth proportional to 289,025,405.46, 398,855,451.47 and 156,866,406.12 is: 216,475,853.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,025,405.46 : 398,855,451.47 = 156,866,406.12 : x
  2. Step 2: Convert to fraction form
    289,025,405.46/398,855,451.47 = 156,866,406.12/x
  3. Step 3: Cross multiply
    289,025,405.46x = 398,855,451.47 × 156,866,406.12
  4. Step 4: Simplify right side
    289,025,405.46x = 62,567,021,232,684,640
  5. Step 5: Solve for x
    x = 62,567,021,232,684,640/289,025,405.46
  6. Step 6: Final answer
    x = 216,475,853.16

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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.