Home / 459,566.40-689,354.68-139,770.35

Finding the Fourth Proportional to 459,566.40, 689,354.68 and 139,770.35

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Solution

The fourth proportional to 459,566.40, 689,354.68 and 139,770.35 is: 209,657.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,566.40 : 689,354.68 = 139,770.35 : x
  2. Step 2: Convert to fraction form
    459,566.40/689,354.68 = 139,770.35/x
  3. Step 3: Cross multiply
    459,566.40x = 689,354.68 × 139,770.35
  4. Step 4: Simplify right side
    459,566.40x = 96,351,344,897.74
  5. Step 5: Solve for x
    x = 96,351,344,897.74/459,566.40
  6. Step 6: Final answer
    x = 209,657.07

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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.