Home / 459,325.17-688,943.19-139,479.80

Finding the Fourth Proportional to 459,325.17, 688,943.19 and 139,479.80

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Solution

The fourth proportional to 459,325.17, 688,943.19 and 139,479.80 is: 209,206.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,325.17 : 688,943.19 = 139,479.80 : x
  2. Step 2: Convert to fraction form
    459,325.17/688,943.19 = 139,479.80/x
  3. Step 3: Cross multiply
    459,325.17x = 688,943.19 × 139,479.80
  4. Step 4: Simplify right side
    459,325.17x = 96,093,654,907.85
  5. Step 5: Solve for x
    x = 96,093,654,907.85/459,325.17
  6. Step 6: Final answer
    x = 209,206.16

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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.