Home / 518,897.20-778,281.36-139,847.58

Finding the Fourth Proportional to 518,897.20, 778,281.36 and 139,847.58

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Solution

The fourth proportional to 518,897.20, 778,281.36 and 139,847.58 is: 209,754.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,897.20 : 778,281.36 = 139,847.58 : x
  2. Step 2: Convert to fraction form
    518,897.20/778,281.36 = 139,847.58/x
  3. Step 3: Cross multiply
    518,897.20x = 778,281.36 × 139,847.58
  4. Step 4: Simplify right side
    518,897.20x = 108,840,764,755.11
  5. Step 5: Solve for x
    x = 108,840,764,755.11/518,897.20
  6. Step 6: Final answer
    x = 209,754.00

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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.