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Finding the Fourth Proportional to 289,244.53, 434,146.67 and 139,590.17

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Solution

The fourth proportional to 289,244.53, 434,146.67 and 139,590.17 is: 209,520.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,244.53 : 434,146.67 = 139,590.17 : x
  2. Step 2: Convert to fraction form
    289,244.53/434,146.67 = 139,590.17/x
  3. Step 3: Cross multiply
    289,244.53x = 434,146.67 × 139,590.17
  4. Step 4: Simplify right side
    289,244.53x = 60,602,607,470.23
  5. Step 5: Solve for x
    x = 60,602,607,470.23/289,244.53
  6. Step 6: Final answer
    x = 209,520.32

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1.5x scale

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.