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Finding the Fourth Proportional to 350,034.80, 525,311.40 and 139,823.60

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Solution

The fourth proportional to 350,034.80, 525,311.40 and 139,823.60 is: 209,838.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,034.80 : 525,311.40 = 139,823.60 : x
  2. Step 2: Convert to fraction form
    350,034.80/525,311.40 = 139,823.60/x
  3. Step 3: Cross multiply
    350,034.80x = 525,311.40 × 139,823.60
  4. Step 4: Simplify right side
    350,034.80x = 73,450,931,069.04
  5. Step 5: Solve for x
    x = 73,450,931,069.04/350,034.80
  6. Step 6: Final answer
    x = 209,838.94

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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.